fullsize viewCalibre J830.5 Power Reserve
The bi-directionally winding rotor inside the J830.5 automatic movement features a power reserve of approximately 50 hours, with a balance wheel frequency of 28,800 vibrations per hour. The display shows besides hours, minutes and seconds the power reserve, complemented by a date at the 3-o’clock position. The traditional design of the wheel bridge adapts the look of its historical predecessors to a new and contemporary interpretation.
| Type: | automatic with power reserve indification |
| Frequency: | 4 Hz (28.800 semi-vibrations/hour) |
| Diameter: | 28.00 mm (12 lines) |
| Height: | 5.39 mm |
| Adjustment: | excentric |
| Winding: | bi-directional (ratchet winding mechanism) |
| Power reserve: | 50 hours |
| Display: | hours, minutes, date, small second at 9 o’clock, power reserve at 3 o’clock |
| Finishing: | “Côtes de Genève” finishing on bridges and rotor, blued screws |
| Jewels: | 34 |
