ISA Speciality Cal. 9231/1890 Multi-Function Quartz Watch Movement Technical Datasheet
Technical datasheet for the ISA Speciality Cal. 9231/1890 multi-function quartz watch movement — a precision module measuring 10.5 ligne (23.30 mm diameter) and 4.13 mm in height. Features five hands with separate day and date windows, date adjustment via pusher at the 2 o'clock position, stop device and current breaker. Rated for 1.85 µA current consumption with instantaneous rate accuracy of ±0.5–15 seconds per day (±15 seconds per month) across an operating temperature range of 0 to +50°C. Magnetic resistance rated at 1500 A/m. Powered by an SR 920 SW silver-oxide battery (1.55 V, 42 mAh capacity) providing approximately 32 months of autonomy. Includes characteristics table and battery specifications for service reference.
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Document Details
- Format
- Pages
- 6
- Size
- 1.1 MB
- Category
- Watchmaking