- Limited edition of 18 pieces.
- Size : 47 mm.
- Thickness : 25 mm.
- Sapphire apertures on sides.
- Two wheel on caseback sides for synchronization of the sidereal time: celestial dial and oval sky indicator.
- Crystal : unique domed sapphire with anti-reflective treatment.
- Water proof
- Celestial dial.
- Black grade 5 titanium.
- Hour and minute subdial : titanium, hand angled and polished, lacquered indexes.
- Differential gear system.
- Hand finished blue.
- Black Louisiana alligator leather strap.
- Sidereal display :Celestial dial covering the internal surface of the inside case, representing the celestial vault through zodiac signs.
- A full rotation in 1 sidereal year counter clockwise.
- Oval sky indication : showing the portion of the stars visible from the northern hemisphere, a full rotation clockwise in 1 sidereal day above the celestial vault.
- Month indication : 12 months on sides of the celestial dial : indication index located at 6 o'clock position.
- Day and night indication : Lacquered hand-engraved titanium globe, rotating on 2 axes :1st axis : a full rotation on itself in 24 hours;2nd axis : central axe, travelling across the celestial vault in 20 minutes.
- Inside a tinted half-domed sapphire, symbolizing night and day.
- Gravitational triple axis tourbillon : Rotating on 3 axes :1st axis : in 60 seconds,2nd axis : in 5 minutes,3rd axis : central axe, travelling across the celestial vault in 20 minutes.
- Orbital second indication :Rotating on 2 axes :1st axis : in 60 seconds,2nd axis : central axe, travelling across the celestial vault in 20 minutes.
- Open worked titanium wheel and hand indicating seconds.
- Hour and minute indication : Patented differential system.
- Rotating on a central axe, travelling across the celestial vault in 20 minutes.
- The Jacob cut moon : Weight : 1 carat.
- 288 facets white diamond patented Jacob cut rotating on 2 axes :1st axis in 60 seconds.
- 2nd axis : central axe, travelling across the celestial vault in 20 minutes.
- Exclusive manufacture Jacob and Co. manual winding.
- القطر : 40 ملم.
- Height : 17 mm.
- Components : 395.Material : titanium with black treatment.
- System : gravitational triple axis tourbillon.
Jacob & Co. Astronomia Sky Limited Edition 47mm
| النموذج | علم الفلك |
|---|---|
| تاريخ الإصدار | 2024 |
| المواد: | تيتانيوم |
| الحجم | 47 مم |
المراجعات
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