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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →The Jacob & Co. Astronomia Tourbillon is a mechanical display built around motion: its four-arm assembly revolves around the dial’s center, while a triple-axis tourbillon and two decorative elements rotate at different speeds. For a specific reference to anchor the details, Jacob & Co.’s Black Gold model, AT100.31.AC.SD.A, pairs that display with a manual-winding movement and shows hours and minutes. The specifications below describe that configuration, not every watch in the Astronomia family.
How the Astronomia Tourbillon display moves
Jacob & Co. describes the Tourbillon’s four-arm vertical movement as completing one revolution around its central axis every 10 minutes. The movement displays hours and minutes; the spectacle is the coordinated motion of the assembly and its components, rather than a conventional flat dial packed with additional indications.
The brand lists the triple-axis tourbillon’s rotation periods as follows:
| Part or axis | Rotation period published by Jacob & Co. |
|---|---|
| First tourbillon axis | 60 seconds |
| Second tourbillon axis | 2.5 minutes |
| Third, central axis | 10 minutes |
| Jacob-cut diamond and magnesium blue-lacquered globe | Each rotates on itself every 30 seconds |
These are the manufacturer’s published specifications, not independent timing measurements. The different periods help explain why the display looks continuously animated: the arms, cage, diamond, and globe do not all repeat their motion at the same pace. Jacob & Co. calls it “a statement piece”—brand copy that describes its intended presence, rather than a technical assessment.
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- SMALL BUDY, BUT VERSATILE:Quality brand original automatic tourbillon style relojes de hombre(watch); without a battery; calendar,waterproof, moon phase function
- LUMINOUS WATCH,EASY TO READ TIME,EVEN IN THE DARK:Fashion design men's mechanical watch, black case with clear golden lines and golden hands, let you read the time easy; The hands will be grow when in the dark, which let you can read the time even in dark
- WATER RESISTANT TO 30M:Waterproof:In general, withstands splashes or brief immersion in water ,but not suitable for hot water bathing or diving. Please do not press any buttons in the water
- NO BATTERY NEEDED:Automatic mechanical movement, Powers with the mechanical movement, without a battery. Operate the watch, to wind-up please whirl the button on the clockwise (Don't need to pull out, just in normal condition.) for 15 to 20 complete revolutions
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Black Gold AT100.31.AC.SD.A specifications
The official Black Gold product page identifies the watch as reference AT100.31.AC.SD.A. Its figures apply to this configuration:
| Specification | Black Gold AT100.31.AC.SD.A |
|---|---|
| Movement | Exclusive manual-winding JCAM10; 365 components; 42 jewels |
| Frequency | 21,600 vibrations per hour (3 Hz) |
| Power reserve | 60 hours |
| Case | 18K black gold; 50 mm diameter by 25 mm thick |
| Crystal | Domed sapphire with multiple anti-reflective treatment |
| Water resistance | 30 m (3 atm) |
| Dial and base | Titanium dial; base dial of 18K black gold and aventurine |
| Strap and clasp | Alligator strap; 18K black-gold deployant buckle |
| Edition | 18 pieces |
Jacob & Co. lists a 50 mm-wide, 25 mm-thick case, so the proportions are a central part of the watch’s design, not a detail to overlook. The stated 30 m water resistance is a specification, not a reason to treat the watch as suitable for swimming or other water activity.
Rank #2
- ⌚ Men Watches : exquisite skeleton tourbillon design, Roman numeral scale with automatic dual calendar window, one watch is multi-purpose, more practical, more luxury, and demonstrates the charm of luxury dress men's wrist watches.
- ⌚ Automatic Mechanical Watches : genuine original movement, support automatic and manual winding, the tourbillon gear can offset the error caused by gravity to the parts in the escapement system of the watch, making the timing more accurate and the error smaller than ordinary automatic watches.
- ⌚ Stainless Steel Watches : solid steel band has been polished many times to make it more durable and scratch-resistant. The concealed bi-fold butterfly buckle is convenient and comfortable to wear, and fits the wrist better without pinching hand hair. The wristband can be increased or decreased by the gift adjuster according to the size of the wrist.
- ⌚ Self Winding Watches : HD luminous effect is excellent, even in the dark, it can display completely and clearly. Sealed high-hardness coating mirror, wear-resistant and scratch-resistant, can swim, can bath in cold water but can not dive.
- ⌚ OLEVS Men's Watches: This store offers 60 days free returns and a 2-year product warranty, extended to after Christmas, so there is no need to worry about damaged goods that cannot be returned for a refund. Package includes watch/gift box/free adjustment tool/user guide. If you encounter problems while using the watch, you can contact us through Amazon and a professional after-sales team will provide you with services.
What to know about readability and wear
The available product information establishes that the watch displays hours and minutes, but it does not describe a hands-on reading test or establish how quickly the time can be read in different lighting or viewing positions. The safest expectation is to approach the Astronomia primarily as a kinetic mechanical display with timekeeping integrated into it, rather than assume its elaborate moving architecture behaves like a conventional dial.
The case dimensions are also relevant before considering fit: this Black Gold reference measures 50 mm across and 25 mm thick. Whether those proportions suit an individual wrist depends on the wearer; the published dimensions alone cannot establish comfort or how the watch sits in person.
Rank #3
- 【⌚ MANUFACTURE CAL.A9301 FLYING TOURBILLON MOVEMENT】 Powered by AGELOCER's proprietary Cal.A9301 hand-wound mechanical movement, featuring a mesmerizing flying tourbillon that showcases the beauty of traditional haute horology. Every rotation reflects the precision engineering and craftsmanship behind fine mechanical watchmaking.
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How the Tourbillon differs from other Astronomia models
“Astronomia” covers distinct watches, and the shared family name does not mean they use the same movement architecture. Jacob & Co. separately presents Astronomia Tourbillon, Astronomia Tourbillon Baguette, Astronomia Art, and Astronomia Revolution. The Baguette is described as a jeweled variant in the Tourbillon family, while Art and Revolution are separate model lines.
| Model or example | Documented distinction |
|---|---|
| Astronomia Tourbillon | Four-arm vertical movement; listed triple-axis tourbillon. Black Gold example: AT100.31.AC.SD.A. |
| Astronomia Tourbillon Baguette | Jeweled variant in the Tourbillon family. |
| Astronomia Art, 4 Skulls example | Separately specified with a static vertical movement. |
| Astronomia Revolution | Distinct model described with a flying double-axis tourbillon and constant-force device. |
These differences matter when comparing movement, display, case, gem-setting, edition, or price. A specification attached to the Black Gold Tourbillon should not be transferred to another Astronomia reference without confirmation. The available product information does not provide a complete, date-matched specification set across all models.
Rank #4
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- ⌚【 Mechanical Watches】This Mechanical watches.Operate without battery, automatic self-winding. However, proper manual winding is indispensable,which can effectively reduce time deviation. (⚠Note: Mechanical watch is different from quartz watch. Insufficient mechanical kinetic energy will cause the watch to stop, please winding it in time.)
- ⌚【30M Waterproof Men's Wrist Watches 】3ATM waterproof watch, can withstand the damage to the watch caused by daily splashing, hand washing, sweat, etc, but it is not suitable for diving and hot water environment.
- ⌚【Service 】Purchase without Worry. We offer a 30-day money-back guarantee for any reason.If you have problems during use of the wristwatch, please don't hesitate to contact us. We will offer you professional service.
- ⌚【How to use 】： 1. No battery is needed, first of all, you need to wind the watch manually 20-30 times. 2. Turn the middle crown clockwise 20-30 turns to finish winding, then the other two buttons can adjust the time and date. 3. Mechanical watches need to have enough power. If you wear it in non-sports condition, you need to rewind it every day to make sure the watch can work normally.4. Error within 30s-60s is in line with international standards.
Price and availability
The official Black Gold product page does not state a price. A retailer-indexed catalog has surfaced prices for multiple Astronomia Tourbillon references, including AT100 models, but that catalog is a changeable snapshot rather than a verified current offer. Confirm the exact reference, current price, stock, and seller’s authorized status directly with Jacob & Co. or the retailer before making a purchase decision.
Quick Recap
Best Value
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- ⌚【Unique Octagonal Design】The front of the octagonal bezel is polished with a polished and brushed process, which is resistant to scratches and presents two different metallic textures. The most classic and legendary aesthetic design has finally conquered the world as the ultimate octagonal case of sporty elegance. The 1.61inch large dial with high quality stainless steel watch band makes the watch more durable. The total length of the watch is 8.26inch.
- ⌚【Mechanical Movement】NO need to use BATTERY, but AUTOMATICE SELF-WINDING! The back of the watch adopts a back-through design, through the sapphire glass back we can clearly observe the movement beauty of the movement.The watch is equipped with a stainless steel bracelet that is comfortable to wear and has a very elegant posture. The whole is meticulously polished to bring a more refined wearing experience.
- ⌚【30M Waterproof】Daily life waterproof design which bear daily wash hand, swear,accidental rain or water splash.Please keep it away from swimming and hot water bathing in case consume the watch.(Note! Mechanical watch is different from quartz watch. Insufficient mechanical kinetic energy will cause the watch to stop, please winding it in time.)
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
