Kaliber J830 Automatik

Type: self-winding
Frequency: 4 Hz (28.800 vibrations per hour)
Diameter: 28.4 mm (12.5 lines)
Height: 5.44 mm
Adjustment: excentric
Winding: bi-directional (pawl winding mechanism)
Power reserve: > 48 hours
Display: hours, minutes, central second, date
Finishing: “Côtes de Genève” finishing on bridges and rotor, blued screws
Jewels: 28