ISA Speciality Cal. 9231/1890 Chronograph Movement Technical Datasheet
Technical datasheet for ISA Speciality Cal. 9231/1890 chronograph watch movement. 10.5 ligne diameter, 23.30 mm height. Includes characteristics (5 hands, 2 eyes for day and date, date adjusted by pusher at 2H, stop device and current breaker), operational specifications (current consumption 1.85 µA, instantaneous rate ±0.5-15 s/day, operating temperature 0 to +50°C, magnetic resistance 1500 A/m), battery specifications (SR 920 SW, 1.55 V, 42 mAh capacity, approx. 32 months autonomy), and detailed technical drawings: frame assembly, dial layout with day and date windows, hand-fitting specifications for hour, minute, second and date hands with precise measurements and shock protection data.
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Document Details
- Format
- Pages
- 6
- Size
- 1.1 MB
- Category
- Horlogerie