- Limited edition of 18 pieces.
- Case: Diameter: 47 mm.
- Thickness: 25 mm.
- Sapphire.
- Two wheels on the case back side for synchronization of the sidereal time: celestial dial and oval sky indicator.
- Crystal: unique domed sapphire with anti-reflective treatment.
- Water proof
- Hour and minute subdial: titanium, hand angled and polished, lacquered indexes.
- Differential gear system.
- Blued Jacob & co. designed hands.
- Movement: Calibre manufacture Jacob & co. manual winding JCAM41.Diameter: 42 mm.
- Height: 21.7 mm.
- Components: 502.Material: titanium.
- Jewels: 67.System: triple axis tourbillon.
- احتياطي الطاقة: 60 ساعة
- Frequency: 21'600 vib/h (3 Hz).
- Functions:Sidereal display.
- Celestial dial covering the internal surface of the inside case, representing the celestial vault through zodiac signsA full rotation in 1 sidereal year 1.1. One sidereal year is the time it takes the earth to orbit the sun.
- 2. Sidereal day= 23.5640916 hours, it is the time it takes the earth to rotate on its axis (relative to vernal equinox).
- Oval sky indication: showing the portion of the stars visible from the northern hemisphere, a full rotation in 1 sidereal day 2 above the celestial vault.
- Month indication: 12 months on sides of the celestial dial.
- Day and night indication:Lacquered hand-engraved titanium globe, rotating on itself in 24 hours, inside a tinted half-domed sapphire, symbolizing night and day.
- 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.
- Satellite and mars animation:Rotating on 2 axes: 1st axis: in 60 seconds, 2nd axis: central axe, travelling across the celestial vault in 20 minutes.
- Hour and minute indication.
- Patented differential system rotating on a central axe, travelling across the celestial vault in 20 minutes.
- The Jacob cut moon:288 facets diamond patented Jacob cut (1ct.) rotating on itself in 60 seconds.
- Strap and clasp: Alligator leather.
Jacob & Co. Astronomia Tourbillon Sky Sapphire Mars Limited Edition 47mm
| النموذج | علم الفلك |
|---|---|
| تاريخ الإصدار | 2024 |
| المواد: | روز جولد |
| الحجم | 47 مم |
المراجعات
لا توجد مراجعات بعد.