- Movement
- Hand-wound
- Size
- 43 mm
Overview
A movement that turns once a minute
The Jacob & Co. Astronomia Regulator, reference AR200.30.AA.AC.A, in an 18-carat white gold and single-block sapphire caseband case, 43 mm across and 18.30 mm high. Its sub-dials are domed green polycarbonate with white printed scales, on a green alligator leather strap with an 18-carat white gold deployment buckle.
Green polycarbonate carries through the sub-dials and the strap. The case, caseback and deployment buckle are 18-carat white gold.
Like every Astronomia, this watch carries its movement on a vertical, three-dimensional, rotating platform. Here the platform makes one full turn in 60 seconds, so the whole movement can be read as a seconds indicator. Hours and minutes have their own off-centre sub-dials, in the manner of a regulator. They are fixed to the platform and turn with it, and a differential system keeps them upright.
Hand-wound calibre JCAM56 has 552 components and a 28-hour power reserve. A flying tourbillon on the third arm turns once a minute on its own axis and once a minute with the platform. Jacob & Co. added a constant force device to steady the energy reaching the movement. This version is limited to 99 pieces.
Key details
Design and engineering
- Time displaySeparate hour and minute sub-dials, set off centre and each held upright by a differential.
- Seconds ringA domed, translucent ring turns counter-clockwise in 60 seconds. A hand rising from the base of the movement points to the seconds on it.
- TourbillonA flying double-axis tourbillon: one rotation on its own axis in 60 seconds, and one with the platform in 60 seconds.
- Constant forceA constant force device with a loading frequency of 1/6th of a second.
- CaseSingle-block sapphire caseband and a curved anti-reflective sapphire crystal. Water resistant to 30 m.
- Sub-dialsDomed green polycarbonate sub-dials with white printed scales.
Calibre JCAM56
- Hand-wound
- 552 components
- 28-hour power reserve
- 21,600 vph (3 Hz)
- Platform rotation in 60 seconds
- Flying double-axis tourbillon
- Constant force device
The reference
Technical specifications
| Reference | AR200.30.AA.AC.A |
|---|---|
| Collection | Astronomia |
| Calibre | JCAM56 |
| Movement | Hand-wound |
| Functions | Vertical Rotating Central Platform: Rotation in 60 Seconds; Flying Tourbillon: Rotation in 60 Seconds; Constant Force Device with 1/6th of a Second Loading Frequency; Off-centered, Separate Hour and Minute Sub-dial with 2 Differentials |
| Power reserve | 28 hours |
| Frequency | 21,600 vph (3 Hz) |
| Components | 552 |
| Case dimensions | 43 mm |
| Case height | 18.30 mm |
| Case material | 18-carat white gold and single-block sapphire caseband |
| Crystal | Curved Anti-Reflective Sapphire Crystal |
| Case back | 18-carat White Gold |
| Water resistance | 30 m (3 atm) |
| Base | Green Polycarbonate |
| Sub-dials | Domed, Green Polycarbonate with White Printed Scales |
| Hands | Red Rhodium Hands |
| Strap | Green alligator leather |
| Clasp | 18-carat White Gold Deployment Buckle |
| Limited edition | 99 pieces |
Buying with HYPA
Purchase with confidence
- Warranty card status disclosed for every piece we sell
- Free insured delivery within Australia · international quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 11 reviewsFrom clients of HYPA International on Google. Read the reviews
Continue browsing
