- Movement
- Hand-wound
- Size
- 50 mm
Overview
A solar system on the wrist
The Jacob & Co. Astronomia Tourbillon Baguette, reference AT800.40.BD.UB.C, in an 18-carat rose gold case, 50 mm across and 25 mm high. Its titanium dial has an 18-carat rose gold base dial invisibly set with 257 baguette multicolour sapphires (≈8.27 ct), on a green alligator strap with an 18-carat rose gold deployant buckle. This version is a pièce unique.
Jacob Arabo turned his interest in space into the Astronomia concept in 2014, modelling a planetary system at wristwatch scale. A vertical platform with four arms rises from the base dial and turns on its own axis, and that motion drives the movement’s functions and indications. The platform completes a revolution in 10 minutes.
Hand-wound calibre JCAM18 has 365 components, 42 jewels and a 60-hour power reserve. A triple-axis flying tourbillon hangs from one arm: its first axis turns in 60 seconds, its second in 2.5 minutes, and the platform adds the third. On another arm, a differential gear system turns the hour and minute dial against the platform at the same speed, so the time stays upright.
Key details
Design and engineering
- Diamond and globeThe Jacob cut diamond has 288 facets and weighs 1 ct. It and the magnesium globe, lacquered blue, each turn on their own axis in 30 seconds.
- Lugs80 baguette white diamonds (≈6.10 ct).
- Base dial18-carat rose gold, invisibly set with 257 baguette multicolour sapphires (≈8.27 ct).
- Clasp18-carat rose gold deployant buckle, invisibly set with 18 baguette white diamonds (≈1.4 ct).
- Case18-carat rose gold with a domed sapphire crystal and an 18-carat rose gold caseback. Water resistant to 30 m.
Calibre JCAM18
- Hand-wound
- 365 components
- 42 jewels
- 60-hour power reserve
- 21,600 vph (3 Hz)
- Triple-axis flying tourbillon
The reference
Technical specifications
| Reference | AT800.40.BD.UB.C |
|---|---|
| Collection | Astronomia |
| Calibre | JCAM18 |
| Movement | Hand-wound |
| Functions | Hours and Minutes; System: Vertical movement with 4 arms. Full revolution in 10 Minutes around the central axis; Gravitational Triple Axis Tourbillon, 1st axis rotating in 60 seconds, 2nd axis in 2.5 Minutes and 3rd Central Axis in 10 Minutes; Dial rotating with a Patented Differential Gears System℗; Exclusive Jacob cut® Diamond (288 Facets, 1 ct.), rotating on itself in 30 Seconds; Magnesium Blue Lacquered Globe, rotating on itself in 30 Seconds |
| Power reserve | 60 hours |
| Frequency | 21,600 vib/h (3 Hz) |
| Components | 365 |
| Jewels | 42 |
| Finishing | High Grade Hand Finishing |
| Case dimensions | 50 mm |
| Case height | 25 mm |
| Case material | 18-carat rose gold |
| Crystal | Unique Domed Sapphire Crystal with Multiple Anti-reflective Treatment |
| Case back | 18-carat Rose Gold |
| Water resistance | 30 m (3 atm) |
| Lugs | 80 Baguette White Diamonds Invisibly Set (~6.10ct) |
| Bows | Winding and Time-Setting via Lift-out Rotating Bows on the Caseback |
| Dial | Titanium |
| Base dial | 18-carat Rose Gold, invisibly set with 257 Baguette Multicolor Sapphires (≈8.27ct) |
| Hands | Blued, Exclusive Jacob & Co. Shape |
| Strap | Green alligator |
| Clasp | 18-carat Rose Gold Deployant Buckle Invisibly Set with 18 Baguette White Diamonds (~1.4ct) |
| Limited edition | Pièce unique |
Buying with HYPA
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- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
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