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Operating Environment| operating temperature range | -10°C to +60°C |
|---|---|
| timekeeping accuracy | ±15 seconds per month |
| crystal oscillator frequency | 32, 768 Hz |
Battery| battery type | secondary battery |
|---|---|
| continuous running time when fully charged | About 5 months |
| continuous running time at 2-second interval movement | About 5 days |
Second hand changes to 2-second movement to indicate low charge.
All watch hands stop moving when the watch is insufficiently charged.
Watch restarts with 2-second movement upon exposure to light after stopping.
Prevents secondary battery damage by stopping charge when full.
Advise to keep the watch charged at all times, even when not worn.
Warns against high temperatures during recharging and proximity to hot lamps.
Do not remove the secondary battery; store safely if unavoidable.
Emphasizes using only the specified battery to prevent damage.
Steps to set the watch time, including crown operation and AM/PM consideration.
Steps to set the watch date, noting calendar limitations and timing.
Details water-resistance levels and appropriate usage scenarios for different ratings.
Provides instructions for cleaning the watch case, crystal, and bands.
Advises on temperature, magnetic fields, and static electricity for safe operation.
Recommends regular inspections, especially for water-resistance packing replacement.
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