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accuracy | ±15 sec/month |
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operating temperature range | -10°C to +60°C |
continuous operating time from fully charged | 5 months |
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continuous operating time from insufficient charge warning | 5 days |
power source | Light converted to electrical energy stored in a special energy storage cell |
accuracy | ±15 sec/month |
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operating temperature range | -10°C to +60°C |
continuous operating time from fully charged | 2 months |
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continuous operating time from insufficient charge warning | 1 day |
power source | Light converted to electrical energy stored in a special energy storage cell |
Minute hand moves in one-minute intervals to signal insufficient charging.
Minute hand moves irregularly to indicate an incorrect time setting.
Automatically prevents overcharging of the secondary battery.