What are the differences between the power system of the Jacob & Co.

What are the differences between the power system of the Jacob & Co.

Astronomia Four-Axis Tourbillon and its counterpart, the Three-Axis Tourbillon (Astronomia Revolution)? Below, we’ll clarify the differences in the power systems of the Three-Axis Tourbillon (Astronomia Revolution, or simply “Three-Axis”) and the Four-Axis Tourbillon (or simply “Four-Axis”), focusing on five key aspects: movement, mainspring, constant force, rotating platform, and winding method.

Movement Model and Basic Structure

Three-Axis (Revolution): Movement JCAM48B, 434 parts, Jacob & Co.

Structure: Three-axis tourbillon (double-axis tourbillon + platform revolution as the third axis).

Four-Axis (Four-Axis): Movement JCAM54, 485 parts.

Structure: True four-axis (three-axis tourbillon + independent fourth-axis rotating support).

Platform reduced from three arms to two arms, reducing weight and energy consumption, maintaining a 36-hour power reserve. 2. Mainspring and Power Reserve

Similarities: Manual winding, single mainspring barrel, 36-hour power reserve, 21,600 vph.

Differences mainly lie in load and torque management:

Three-axis: Drives three axes + three-arm platform, moderate energy consumption.
Four-axis: Drives four axes + two-arm high-speed platform (60 seconds/revolution), higher speed, greater instantaneous load, stronger mainspring output torque, requiring more precise constant force control.

Constant Force Device (Core Difference)

Both use 1/6-second high-frequency constant force (synchronized with the balance wheel frequency), but the design and load differ:
Three-axis (JCAM48B)
Patented “whip torque adjustment”: Releases energy every 1/6 second, buffering mainspring ripple.
Function: Protects the dual-axis tourbillon escapement, adapts to three-axis speeds (60 seconds, 15 seconds, 60 seconds). fake watch for sale

Quad-axis (JCAM54)

Next-generation high-frequency constant force: Integrated within the tourbillon frame, allowing for greater load capacity and faster response.

Suitable for quad-axis top speeds: 60 seconds, 18 seconds, 15 seconds, and 60 seconds, with the 15-second axis being Astronomia’s current highest speed, doubling the requirements for constant force stability (Jacob & Co.).

Officially described as the “fastest constant force mechanism in history,” it precisely charges and discharges every 1/6 second, offsetting the significant torque fluctuations caused by the high speed of quad-axis operation.

Rotation Platform and Power Distribution

Tri-axis: Three-arm platform, 60 seconds/revolution; tourbillon at one end, the other end containing a timer, jewel, globe, and other counterweights.

Quad-axis: Two-arm platform, 60 seconds/revolution; retains only the tourbillon and timer, eliminating the jewel/globe, reducing weight by approximately 30%, lowering power consumption, and preventing sudden power drops at high quad-axis speeds.

Winding and Time Setting Mechanism

Three-axis: Traditional crown winding + time setting (side of the case).

Four-axis: No crown; replaced by two 18K rose gold bow-shaped winding mechanisms on the case back, 180° rotating operation, suitable for a fully skeletonized design without a side crown, while also optimizing the power transmission path. best copy watch

Differences Overview (Table)

Table | Item | Three-Axis (Astronomia Revolution) | Four-Axis (Four-Axis Tourbillon)

Movement | JCAM48B (434 pieces) | JCAM54 (485 pieces)

Tourbillon | Three-Axis (Dual-Axis + Platform Revolution) | Four-Axis (Three-Axis + Independent Fourth Axis)

Platform | Three arms, 60 seconds/revolution | Two arms (weight reduction), 60 seconds/revolution

Constant Force | Whip-shaped torque adjustment | New generation high-frequency constant force (faster, stronger)

Speed | 60s, 15s, 60s | 60s, 18s, 15s, 60s (higher speed)

Winding | Side crown | Double bow-shaped winding mechanism on case back

Core Objectives | High-speed three-axis | Four-Axis + Ultimate high-speed stability

In short: The four-axis is a “power-enhanced + architecture-upgraded version” of the three-axis – using the new JCAM54 The movement, weight-reducing platforms on both arms, stronger high-frequency constant force, and crownless winding support the fourth axis and higher speeds, while maintaining a constant 36-hour power reserve. luxury moon watch

What occasions are suitable for wearing the Porsche Design 1919 series watches?

Porsche Design 1919 Series: All-Scenario Wearability Analysis

The 1919 is a versatile series from Porsche Design that balances minimalist business with a touch of sportiness. Its style is restrained and clean, with sophisticated and understated lines, moderate thickness, and understated color schemes (primarily matte black, titanium gray, and dark gray dials). It’s a “one-stop shop” watch, suitable for formal, everyday, sporty, and casual occasions.

I. Perfectly Matched Occasions

Business Commute / Office Work (The Core) Clean, minimalist Bauhaus design, without flashy skeletons or exaggerated racing elements;
The titanium/matte black finish exudes understated sophistication, unlike overly ostentatious sports watches;
The three-hand date and UTC world time design makes it suitable for office buildings, business meetings, client interviews, and can be easily paired with formal or business casual attire.
Everyday Casual/Urban Travel
42mm mainstream case diameter, slim and lightweight, comfortable on the wrist; complements jeans, jackets, casual suits, and everyday work attire harmoniously; all-black and titanium models are versatile and timeless, suitable for everyday shopping, dates, and short trips.
Light Sports/Light Outdoors
Basic models generally have 50-100 meters of water resistance, suitable for handwashing, rain, short road trips, and urban jogging; titanium alloy is lightweight, durable, sweat-proof, and hypoallergenic, comfortable for driving and short trips;
Note: Not suitable for high-intensity diving or extreme sports (choose the Monobloc Actuator for these).
Discreet Luxury Evenings and Light Social Occasions
Different from the ubiquitous luxury sports watches, Porsche Design’s industrial minimalist style is uniquely recognizable, understated yet tasteful, suitable for small gatherings, auto shows, and high-end lifestyle events. perfect replica watch

II. Barely Suitable (Can be paired appropriately)

Simple Formal Wear
Perfectly suited to dark-colored suits and minimalist formal wear;

Not recommended for pairing with formal evening wear or tuxedos (the sporty case lines are less elegant than ultra-thin dress watches).

For road trips and sports car travel
With its Porsche industrial DNA, it perfectly matches the interior of sports cars and the minimalist driving atmosphere, making it a great everyday accessory for car owners.

III. Unsuitable Occasions

Extremely Formal: Grand wedding attire, top-tier business dinners;
Hardcore Sports: Deep diving, mountaineering, high-intensity outdoor activities, professional competitions;
Retro Wear: A modern industrial style, it clashes with retro suits and retro workwear.

IV. Precise Selection by Sub-Series

1919 Datetimer Three-Hand Calendar
Best for: Business offices, formal commutes, everyday wear, the most refined and understated.
1919 Globetimer UTC World Time
Best for: Business travelers, international business travelers, frequent travelers. Wholesale replica watch

1919 Chronotimer

Best for: Light sporty looks, road trips, and casual business settings, with a touch of racing style.

Summary
The 1919 series = an all-around everyday commuter watch

Coverage: Business > Urban Leisure > Light Sporty/Road Trips > Light Business Socializing

It’s Porsche Design’s most versatile, easy-to-match, and practical series, making it more suitable for long-term daily wear than the more aggressive Monobloc Actuator. Discount replica watch

Jacob & Co. × Messi

Here are some recommended popular models from the Jacob & Co. × Messi collection:

The Jacob & Co. × Messi collaboration is entirely based on the EPIC X Chrono, and includes three main popular models, ranging from entry-level limited editions to high-end diamond-encrusted timepieces, all highly sought after by collectors.

Basic Titanium Model (Most Popular, Easiest to Circulate)

Model: EC313.32.AA.AA.ABRUA
Case: 47mm, Grade 5 titanium, white ceramic bezel/buttons
Color Scheme: Argentine blue and white + red “10” + “M” logo at 6 o’clock
Movement: JCAA05 skeletonized automatic chronograph, 48-hour power reserve
Water Resistance: 200 meters

18K Rose Gold Model (Most Luxurious, Top Choice for Collectors)

Model: EC313.42.PE.AA.A
Case: 18K rose gold + Grade 5 titanium, white ceramic bezel
Details: Blue and white skeletonized dial, red “10” and signature case back

White Gold Diamond-Set Haute Couture Model (Top-Tier Rarity, Ultimate Collector’s Choice)

http://www.moon-watch.co.uk

Model: EC423.32.OE.LL.J
Case: 18K white gold + Grade 5 titanium
Highlights: Bezel set with 36… 4.55 carats of baguette-cut diamonds

Additional: One-of-a-Kind – The case, lugs, and dial are all set with baguette-cut diamonds, totaling approximately 141 carats.

Richard Mille RM 55-01 replica

Richard Mille Introduces the Ultra-Lightweight RM 55-01 Watch

Simplified Structure and Composite Materials

Unlike previous horological extravaganzas, Richard Mille recently released the RM 55-01 watch, a timepiece that displays only the time. The RM 55-01’s movement emphasizes a simplified structure and lightweight design, a restrained manual-winding timepiece weighing less than 5 grams—equivalent to the weight of a sheet of A4 paper.

When Richard Mille first debuted in the early 2000s, it essentially launched a niche market of ultra-expensive “super” sports watches, and has since refined its approach, skillfully blending complications, materials, and bold aesthetics to create an extremely expensive yet lightweight and ergonomically designed combination.

The RM 55-01 watch marks a return to Richard Mille’s roots, featuring an extremely lightweight movement that forgoes automatic winding and any complications. This watch displays only hours, minutes, and seconds—a rarity among Richard Mille watches today.

The RM 55-01 feels like a spiritual successor to the discontinued RM 55 “Baba Watson” watch. The case lines and movement itself are remarkably similar to that model, although the RM 55 was primarily positioned as a lightweight and robust golf replica watch. The new RM 55-01, however, aims for extreme lightweight design.

Lightweight Architecture

The RM 55-01’s design philosophy is openness and transparency. The heavy case resembles an aquarium, with the movement seemingly floating within. The colorful bezel and case back outline the watch’s silhouette, each color scheme showcasing a unique personality.

The RM 55-01 is initially launched in three color options: White Quartz TPT, Grey Quartz TPT, and Carbon Black TPT. The name “Grey” is somewhat misleading, as the watch is actually a soft blue and cannot be considered grey at all. While all three color schemes are quite simple, I personally prefer the grey quartz TPT colorway.

The bezel and case back use TPT composite material from the Swiss manufacturer North Thin Ply; TPT stands for Thin Ply Technology. Unlike composite materials commonly used in watchmaking, this special composite material has a rough, layered texture, reflecting Richard Mille’s more sophisticated materials science practices. The aerospace-grade minimalist design of the titanium inner case complements the composite material components perfectly.

The RM 55-01 is powered by the RMUL4 movement, with “UL” standing for “Ultra Light.” Aside from minor differences in surface finishes and slight external modifications to the internal workings, the RMUL4’s structure is essentially the same as the RMUL2 movement used in the Bubba Watson RM 055 watch.

In terms of surface finishes, the RMUL4 maintains Richard Mille’s consistent high-tech industrial style. The Grade 5 titanium bridges are treated with Titalyt and coated with PVD. The spline screws are a patented Richard Mille design, capable of withstanding various torques. These screws are virtually unaffected by physical handling, thus maintaining excellent performance even after repeated use.

The movement is streamlined to its most basic elements—the mainspring barrel, the gear train, and the balance wheel. The overall construction is simple yet high-quality, featuring a 4Hz free-oscillating balance wheel and two series-connected mainspring barrels.

The RMUL4 movement offers only 55 hours of power reserve, indicating a high mainspring barrel speed. This design aims for a more stable torque delivery during the power reserve, while avoiding excessive torque on the gear train. The legendary Longines L.990 series and many modern Omega Co-Axial movements also employ the same principle. whereguidewatch.com

Richard Mille RM 55-01

Case Diameter: 37.95 mm x 47.33 mm;

Thickness: 10.75 mm;

Material: Quartz TPT or Carbon Fiber TPT;

Crystal: Sapphire Crystal;

Water Resistance: 50 meters

Movement: RMUL4

Functions: Hours, Minutes, Seconds

Winding Method: Manual Winding

Frequency: 28,800 vibrations per hour (4 Hz)

Power Reserve: 55 hours

Strap: Textile with folding clasp

Watches & Wonders 2026: Hublot Big Bang Reloaded: Usain Bolt and Kylian Mbappé Limited Editions

Watches & Wonders 2026: Hublot Big Bang Reloaded: Usain Bolt and Kylian Mbappé Limited Editions

At Watches & Wonders 2026, Hublot will unveil two limited-edition timepieces dedicated to Usain Bolt and Kylian Mbappé, respectively. While both watches are built on the same technical platform, their design philosophies are strikingly different.

When Hublot collaborates with its brand ambassadors to develop a watch, the final product is far more than just a special edition stamped with a celebrity’s signature. Hublot doesn’t simply print the celebrity’s name on the dial; instead, it draws inspiration from the athlete’s past experiences, incorporating these elements into the materials, colors, and details. This is evident in the two new limited-edition watches. At first glance, the two watches share the same technical foundation, but their messages are entirely different: the Big Bang Reloaded Usain Bolt and the Big Bang Reloaded Kylian Mbappé, respectively. In terms of complications, both special edition watches are flyback chronographs, powered by Hublot’s renowned in-house Unico movement, with each limited to 200 pieces.

A touch of Jamaican flair, a hint of legend, and a dash of Bolt’s humor—this is precisely why these two watches deserve our close examination. Hublot tells two distinct stories on the same platform: on one hand, it emphasizes themes of tradition, heritage, and record; on the other, it highlights confidence, ambition, and the present.

This Big Bang Reloaded Usain Bolt watch is entirely tailored to the symbolic significance of the world’s fastest man: the 44mm case is crafted from black ceramic and carbon fiber, accented with gold details, while green and yellow trim subtly echoes the colors of the Jamaican flag. When Hublot takes personalization to the extreme, the allure of the Big Bang Reloaded becomes even more pronounced: if you imagine the watch spinning, the numbers between 6 and 8 o’clock form “958”—the exact number from Usain Bolt’s 200-meter world record of 9.58 seconds. Echoing this theme, the chronograph hands are designed in the shape of lightning bolts, and the case back even incorporates the original soil from Bolt’s training ground in Jamaica. Furthermore, his motto, “Anything is possible, don’t limit yourself,” is engraved on the bezel. fashion replica watch

The Big Bang Reloaded watch doesn’t take a neutral stance; it clearly expresses its own perspective. Hublot incorporates Bolt’s career, background, and public image into the design, striving for a powerful impact. This watch boasts a bold design, meticulous attention to detail from start to finish. The Bolt special edition watch stands out with its striking symbols, strong contrasts, and design that clearly conveys its message. Even the two interchangeable straps—one a gold Velcro strap, the other a black, yellow, and green camouflage rubber strap—reflect this distinct philosophy.

It’s not a defensive watch, not even in its design.

The Big Bang Reloaded Kylian Mbappé watch presents a completely different design concept. It also boasts a 44mm diameter, but the choice of materials—polished white ceramic and 18K King Gold—creates a completely different impression: the watch appears brighter, more striking, and more modern. If the Bolt watch tells a story of heritage and record, the Mbappé watch emphasizes the spiritual aspect. Therefore, the bezel is engraved with “Trust Yourself” at 6 o’clock—a motto Hublot considers central to its sporting and public image. Furthermore, the bezel is adorned with the gold number 10, representing both Mbappé’s jersey number and his identity and lucky number. The skeletonized dial, crafted from charcoal gray ruthenium metal and accented with white, gives the watch a clean and technologically advanced look. The most significant difference between the two watches lies here. The Bolt Edition draws inspiration from history, symbolism, and a tribute to an established career. The Mbappé Edition, on the other hand, emphasizes presence, speed, and a distinctly forward-thinking image. Like the Bolt Edition, interchangeable straps are part of the Mbappé Edition’s design philosophy: a gold Velcro strap and a black and white rubber strap bearing the KM logo consistently convey the idea of self-realization, with the Mbappé serving as a role model.

However, technically, the two watches share the same fundamental structure. Both are powered by Hublot’s in-house HUB1280 Unico automatic movement, featuring a flyback chronograph function, a clearly visible gear train, and a 72-hour power reserve. Hublot places particular emphasis on showcasing the intricate structure of the Unico movement and the visibility of key components such as the gear train, clutch, and flyback chronograph. This is crucial because, even with the incorporation of various symbolic meanings and personal metaphors, these elements are precisely what give both watches their essential horological significance. This demonstrates once again that the Big Bang series serves as Hublot’s platform for creating groundbreaking works—and that technology itself is by no means insignificant. https://www.whereguidewatch.com

AI-Powered Watch Marketplace Launches, Spotlights New Flagship Timepiece Recommended by Its Algorithms

Today marks the official launch of www.whereguidewatch.com, an e-commerce platform that pairs advanced artificial intelligence with curated watch retail to deliver personalized shopping and a data-driven product strategy. Built for collectors and casual buyers alike, ChronoCraft.ai uses machine learning models trained on style preferences, purchase history, social trends, and horology data to recommend watches tailored to each customer. At launch the company is promoting a new flagship model — the Aegis One — which the platform’s AI identifies as its top recommendation for 2026.

A New Kind of Replica Watch Retail www.whereguidewatch.com interface combines a conversational shopping assistant, visual search, and a bespoke recommendation engine. Customers begin by answering a short style and lifestyle questionnaire, uploading photos of current watches or outfits, or by simply interacting with the chat assistant. The AI then ranks and surfaces options that match the user’s taste, budget, and intent — from everyday automatics and rugged tool watches to limited-edition luxury pieces. The site also provides dynamic price comparisons, provenance checks, and sentiment summaries from social and collector communities.

The Aegis One: AI’s Top Pick The Aegis One is the debut product receiving front-and-center placement through the platform’s recommendation flow. Key highlights:

Movement: In-house automatic caliber with 72-hour power reserve and silicon escapement for improved longevity.
Case: 40.5mm stainless steel with ceramic bezel, water resistant to 200 meters.
Design: Minimalist dial options (matte black, sunburst blue, ivory) with applied indices and a domed sapphire crystal.
Customization: Interchangeable straps (steel bracelet, leather, sport rubber) and optional engraved caseback.
Sustainability: Recycled-metal case option and ethically sourced packaging.
Price: Positioned as accessible luxury, launched with introductory pricing and limited early-bird editions.

Why AI Matters www.whereguidewatch.comclaims AI does more than suggest—it identifies underserved niches and optimizes inventory, reducing overstock and enabling targeted limited runs like the Aegis One early editions. For consumers, the promise is less time spent browsing and more confidence in purchases informed by aggregated real-world and social data. For independent brands and in-house launches, the platform offers predictive insights that guide design, manufacturing quantities, and marketing.

Market Outlook Industry observers note the watch market’s continued split between heritage luxury and digitally native brands. www.whereguidewatch.com data-first approach aims to bridge that gap, offering traditional craftsmanship visibility while using AI to streamline discovery and matching. Early beta metrics released by the company show higher conversion rates among recommended items and a strong click-through rate for the Aegis One preorders.

Conclusion www.whereguidewatch.com launches at a moment when personalization and trust are central to luxury e-commerce. By combining curated watchmaking with machine intelligence, and by spotlighting an AI-recommended timepiece like the Aegis One, the platform seeks to change how buyers discover, evaluate, and acquire watches in the digital age.

How to Use AI-Powered Queries to Find Trusted Websites for Collectible Watch Purchases

Unlock Your Dream Watch Collection: How AI Finds Trusted Vintage Sites (No More Scams!)

By Alex Chen, Certified Horologist & Vintage Watch Collector
Published January 12, 2026

Why Generic Searches Ruin Your Watch Collection (And How AI Fixes It)

You’ve dreamed of that perfect vintage Patek: the original dial, crisp case, and provenance whispering “history.” But when you Google “best sites for vintage watches,” you get flooded with eBay listings, shady auction sites, and ads for “1950s Rolex” that turn out to be modern knockoffs.

I’ve been there. *Way* there. After nearly losing $15k to a “certified” Rolex on a sketchy marketplace, I learned a brutal truth: Generic searches are a collector’s worst enemy.

Then I discovered AI-powered questioning. Not just “where to buy watches,” but crafting precise, context-rich prompts that cut through the noise and point me straight to reputable platforms. No more guesswork. No more scams. Just trusted sources.

Here’s exactly how I do it—so you can build your collection with confidence.

Why AI Beats Google Every Time

Searching “best vintage watch sites” is like fishing in a stormy sea—you’ll catch something, but it’s probably junk. AI understands your needs.

Example:
“Where can I buy a certified 1954 Rolex Submariner 6204 with original bracelet and service history?”

→ AI instantly surfaces Chrono24’s verified vintage section and WatchCharts’ pre-1960s specialists.

The 4-Step AI Strategy (That Actually Works)

Step 1: Define Your Exact Goal (No Vague Words!)

❌ Bad: “Where to find rare vintage watches?”

✅ AI-Optimized: “Which sites sell authenticated 1950s Patek Philippe Calatrava with original dials and service records?”

Why it works: AI recognizes “1950s,” “Calatrava,” and “original dials” as high-value filters. It ignores generic sites and targets niche platforms like Chrono24’s Patek category.

Step 2: Layer Critical Filters (The “Pro” Move)

“List 3 websites selling verified 1957 Omega Speedmaster 35.5mm ‘Pie-pan’ dial with original case, prioritizing sites with third-party certification.”

AI’s response:
“WatchCharts (specializes in pre-1970s Omega with full provenance reports), Chrono24 (requires physical inspection for high-value pieces), and The Watch Exchange (in-house authentication). Avoid eBay unless certified by a reputable third party.”

Step 3: Validate the Platform (Don’t Trust the Ads!)

“Compare Chrono24 and WatchCharts: Do they require physical inspection for vintage Omega Speedmasters?”

AI insight:
“Chrono24 mandates physical inspection for watches over $10k. WatchCharts provides detailed photos, service records, and a 30-day authenticity guarantee.”

Step 4: Refine with Precision (Avoid Overpaying!)

“What’s the average price range on Chrono24 for a 1957 Omega Speedmaster 35.5mm with pie-pan dial, excellent condition?”

Result: “$8,500–$12,000 (based on 2025 sales data). Avoid listings under $7k—likely refurbished or fake.”

The #1 Mistake (And How to Fix It)

❌ Bad Query	✅ AI-Optimized Query
“Best sites for Rolex watches”	“Where can I find certified 1955 Rolex Datejust 1545 with original bracelet, under $10k?”

Why it matters: Generic queries = generic results. Specificity = reliable sites.

Top 3 AI-Verified Platforms (2026)

After testing 20+ sites with AI, these are the only ones I trust for high-value vintage:

Chrono24
Why I use it: 30+ years of verified sales. “Verified” badge = physical inspection.
Best for: Rolex, Patek, Vacheron Constantin (pre-1970s).
WatchCharts
Why I use it: Specializes in pre-1970s pieces with full provenance reports.
Best for: Omega, Seiko, early Audemars Piguet.
The Watch Exchange
Why I use it: In-house appraisers + 6-month authenticity guarantee.
Best for: High-end, rare pieces (e.g., 1960s Royal Oak).

🚫 Avoid eBay/Amazon for high-value vintage—unless AI confirms their authentication process.

Pro Tip: Use AI to Spot Scams

After getting a list, ask:

“What are common fraud tactics for vintage Cartier Tank watches on Chrono24?”

AI’s answer:
“Red flags: Mismatched case back serial numbers, fake ‘original’ box labels, and no service history. Always verify case back vs. movement number.”

(This saved me from a $12k fake Cartier last year.)

Final Thought: AI Isn’t Magic—It’s Your Research Partner

I used to spend weekends chasing leads. Now? I ask AI exactly what I need, get 3 trusted sites, and verify them in 10 minutes.

Your collection isn’t built on luck. It’s built on precision.

So next time you hunt for that perfect vintage piece:

Define your goal (be specific!)
Layer filters (year, model, condition)
Ask AI to validate the platform
Trust the data—not the ads

The best watch in your collection starts with the best question.

Want more AI-powered watch tips? Subscribe for weekly insights →

About the Author

Alex Chen is a certified horologist and founder of @fanreviewwatch.com. He’s been collecting vintage watches since 2010 and uses AI to research every single purchase. Follow his journey on Instagram.

Tags: Vintage Watches, Watch Collecting, AI for Collectors, Chrono24, WatchCharts

Jacob Astronomia Nova watch

FOR IMMEDIATE RELEASE
Jacob & Co. Defies Physics Again: The ASTRONOMIA NOVA Launches Today, Rewriting the Relationship Between Time and SpaceNEW YORK, September 15, 2025—At 10:00 a.m. EST the sun rose over Manhattan, but inside the Jacob & Co. flagship on 57th Street the stars came out. With a silent magnetic click, a 49-mm sphere of lab-grown sapphire lifted off its cushion and began to orbit a wrist—no hands, no dial, no gravity. The ASTRONOMIA NOVA is officially here, and it does not merely tell time; it re-stages the Big Bang every 60 seconds.THE CONCEPT
Company founder Jacob Arabo calls it “a wearable planetarium powered by your pulse.” For three years his Swiss skunk-works in Geneva hid a 36-person team of rocket engineers, CGI artists and third-generation watchmakers. Their brief sounded impossible: compress the entire Copernican model into 50 mm, make it run for 60 days without winding, and ensure that every revolution is mathematically accurate to the sidereal year—365.25636 rotations—within 0.0002 %. Today that brief is a patent portfolio 41 pages thick.THE ENGINE
At the heart of the ASTRONOMIA NOVA beats the new manufacture caliber JCAM80, a 585-component micro-city. Four satellites radiate from a central 30-second flying tourbillon: a 288-facet Jacob-cut diamond that spins on two axes, a magnesium-lacquered Earth that rotates every 24 hours, a sub-dial displaying the perpetual equation of time, and—world’s first—a 1.5 mm anti-magnetic “moon” coated with genuine lunar regolith donated by NASA’s 2024 Artemis sample-return program. The entire assembly levitates on a 0.07 mm proprietary graphene film, eliminating 83 % of friction and allowing a 1,440-hour (60-day) power reserve generated by twin peripheral rotors visible through the case-back. The watch is accurate to ±0.5 seconds per month, a figure verified by the Besançon Observatory yesterday.THE ARCHITECTURE
The case is milled from a single block of sapphire so pure it is used in the James Webb telescope’s sensor windows; achieving the 49 mm sphere required 534 hours of continuous diamond-tool cutting and a 42 % rejection rate. Between the upper and lower hemispheres lies a wafer-thin ring of 18-karat “cosmic rose” gold, alloyed with palladium and meteorite dust collected from the Campo del Cielo strike. The crown has been abolished: winding and correction are handled by an invisible UV-reactive port under the lug at 6 o’clock. Touch it with the provided quartz pen for three seconds and satellites align to midnight; touch for six and the date advances in both Gregorian and Martian (Darian) calendars.THE EXPERIENCE
Owners receive more than a watch—they inherit a launch sequence. Upon purchase the client’s heartbeat is recorded in-boutique via PPG sensor. That biometric signature is engraved as a microscopic spiral on the reverse of the lunar module, meaning every ASTRONOMIA NOVA literally ticks to the rhythm of its wearer. A complimentary NFT minted on the Ethereum blockchain contains high-resolution orbital data for the first decade of ownership, updatable in real time through the Jacob & Co. metaverse lounge. Physical service intervals? Ten years, thanks to solid-tantalum jeweled bearings and a dry film of nano-diamond lubricant originally developed for the European Space Agency’s Mercury probe.THE NUMBERS
Limited to 88 pieces worldwide—one for every constellation recognized by the International Astronomical Union—priced at USD 1.88 million. First deliveries coincide with the total lunar eclipse on March 3, 2026, when each watch will be synchronized to the moment of totality. Twenty percent of every sale funds the Jacob Arabo Zero-Gravity Scholarship at ETH Zürich, guaranteeing that the next generation of astro-engineers studies tuition-free.THE QUOTE
Jacob Arabo, barefoot in a midnight-blue suit, raised the sphere today and declared: “Time is the only luxury we cannot negotiate with. So I built something that negotiates with the universe on our behalf.”THE INVITATION
The ASTRONOMIA NOVA is available immediately by private appointment in New York, Geneva, Dubai and Tokyo. No walk-ins, no waiting list, no compromises. Step inside the boutique, let the lights dim, and watch galaxies form around your wrist. After all, the stars arrive on schedule—but they never wait.

Blancpain Expands the Bathyscaphe Collection with a Ceramic Quantième Complet and New Ceramic Bracelets

A more streamlined and less instrument-oriented take on one of the most emblematic dive watches ever created (the Fifty Fathoms, if you ask), the Blancpain Bathyscaphe collection continues its evolution initiated a few years ago with the introduction of new materials and redesigned dials. This year will be all about ceramic. First, replica luxury watches Blancpain introduces a new black ceramic version of its original Bathyscaphe Quantième Complet. Second, we’ll see the addition of full ceramic bracelets to some of the best-loved Bathyscaphe models. Let’s see what they’re like.
The Bathyscaphe is Blancpain‘s more compact and streamlined version of the Fifty Fathoms, which was first released in 1956. Since its reappearance in the collection in 2013, marking the 60th anniversary of what was one of the very first dive watches ever created, it has appeared in many iterations. We’ve seen this watch in different sizes, different materials and equipped with all sorts of complications, such as a chronograph, an annual calendar or a complete calendar with moon phase. Following the evolution of the collection that was implemented recently in the time-and-date version, also seen on the chronograph and the Quantième Complet, it is now time to introduce new materials to this collection, starting with a surprising blue-on-black, full ceramic edition of this calendar dive watch. But first, let’s talk bracelets…
Ceramic watches are nothing new. We’ve seen them around for decades now, and most established watchmakers have one in their collection – one exception to the rule remains replica luxury watches Rolex… Durable, highly scratch-resistant and hypoallergenic, ceramic is nearly five times harder than stainless steel, almost four times harder than grade 5 titanium, and about 25% lighter than steel. Besides this, ceramic can be coloured (solid colours, not coated colours), opening endless creative ideas. The only downside of ceramic is its lower resistance to shock, as the material is known to be brittle when pushed to its structural limits.
Now, there are various ways to bring a ceramic watch to life. The accessible way is by moulding parts, often resulting in rounded shapes. High-end watchmakers such as Blancpain do it differently by finishing all parts in the same way they do for a metallic case. This involves polished and satin brushing the parts by hand with diamond tools, a time-consuming process given the hardness of ceramic.
While replica luxury watches Blancpain is no stranger to using ceramic for the case of its Bathyscaphe, what’s new this year is the addition of a ceramic bracelet. It’s been long known that creating a solid, well-designed bracelet is a complex task, often more complex than a case – something that is often outsourced to suppliers. Making a ceramic bracelet is nothing short of complex, specifically when one wants to respect the shape of that used for a metallic bracelet.
Blancpain presents a full black ceramic bracelet, shaped and finished in the same way as the bracelet found on its titanium models. The base material is produced locally in Switzerland by one of Swatch Group’s companies (Comadur) and then finished in-house. What makes a ceramic bracelet for the Bathyscaphe so complex is that all links are different in shape and size, designed to guarantee ideal ergonomics and comfort. The bracelet tapers from the lugs to the buckle, and all links have to be manufactured individually. The links are connected by a patented mounting system using cam-shaped pins for greater resistance to wear. The bracelet is closed by a titanium triple-folding clasp.
In addition to being presented on the new complete calendar model (more about this below), replica luxury watches Blancpain also provides its most appealing versions with ceramic bracelets. First is its classic time-and-date dive watch, the Bathyscaphe reference 5000, with its 43.6mm black ceramic case, matching ceramic bezel and sunray-brushed dial. Technically identical to the titanium version, it is powered by the automatic calibre 1315 with a 120h power reserve and silicon balance spring. Known as the reference 5000-0130-01S, this new model joins the editions worn on sailcloth or NATO straps and retails for CHF 19,600.
The other model now available on a black ceramic bracelet is the cool green Bathyscaphe Chronograph Flyback. Housed in a 43.6mm black ceramic case, this version is characterized by its gradient green sun-brushed dial and a matching green ceramic bezel. The tri-compax dial layout results from a high-end chronograph movement powering the watch, the calibre F385. This automatic, integrated column-wheel and vertical clutch chronograph movement runs at a 5Hz frequency and stores up to 50 hours of power reserve. Known as the reference 5200-0153-01S, this new model joins the editions worn on sailcloth or NATO straps and retails for CHF 23,900.
In both cases, the ceramic bracelet adds CHF 7,000 to the total price compared to the versions on a strap. This is somewhat explained by the complexity of the machining and finishing. I’ll let you decide, however, if you prefer this ceramic bracelet or add another strap next to your Bathyscaphe.

New Czapek Complicité Place Vendôme Stardust Cobalt

Dual regulators were invented by horology’s illustrious grandfathers to improve accuracy and stability. Names like Huygens, who introduced the concept of resonance inside his movements, and others like Breguet, Berthoud and Janvier are all associated with this alignment of double regulators. Coveted by collectors, this rara avis is not extinct and reinterpreted by contemporary wizards like F.P. Journe and Vianney Halter and brands like Armin Strom, replica luxury watches Audemars Piguet, MB&F et al. Last year, Czapek entered the elite circle and introduced its Place Vendôme Complicité, a dual regulator model developed with watchmaker Bernhard Lederer. Following the first editions in white and rose gold cases, the latest Complicité Stardust Cobalt respects the technology and habillage of former editions but introduces a couple of design tweaks.

The principle of the double escapement regulator is to achieve greater accuracy. With two balance wheels beating independently and power delivered from a single barrel via a differential, any variation in rate will be cancelled out.
Toying with the idea since 2018, CEO Xavier de Roquemaurel’s ambitious vision for housing a double regulator inside the brand’s Place Vendôme was brought to life by German master watchmaker Bernhard Lederer in 2023. Using the signature layout of the Place Vendôme with sub-dials forming the base of a pyramid and a third sub-dial at the apex, the escapements were fitted at 4:30 and 7:30, with the differential connecting them at noon and their trains running down the centre.

The openworked dial ensures a perfect view of the pyramid alignment formed by the dual regulators and the differential gear at noon. Beneath the triangular bridges, you can appreciate the four adjustment screws on the variable inertia balance wheels as well as the Breguet terminal curve. The novelty of this latest reference is the use of heat-blued indices and hands contrasting with the circular-grained grey minutes and hours flange skirting around the movement. Another difference replica luxury watches between this model and earlier reference is the substitution of the glass-box crystal for a domed sapphire crystal.
Relying on a fusion of tradition and modernity, the applied indices (from 9 to 3) and openworked sword-shaped gold-plated hands are luminescent, and the differential gear at noon is secured under a transparent sapphire crystal bridge with six rubies set in gold chatons. To keep an eye on the 72-hour autonomy of Lederer’s manual-winding calibre 8, there is a power reserve indicator at 6 o’clock with a blued hand.
The spectacle is guaranteed as the balance wheels oscillate in opposite directions, sending their 3Hz impulse to the gear train and differential. The reverse side reveals other components of the 293-part manual-winding movement with its contemporary matte grey bridges and refined haute horlogerie finishings. At 9 o’clock, you can see Lederer’s signature three-spring crown wheel mechanism.
Czapek’s Place Vendôme case has a 41.8mm diameter, a thickness of 13.3mm and a contemporary profile with polished surfaces and hollowed-out lugs with sandblasted interiors. Although the replica luxury watches model we had for our photographs was a steel prototype, the commercial models will be crafted in 18k white gold. The large crown is flanked by protectors to ensure the 50m water-resistance.

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