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Power| power supply | Manganese titanium-lithium rechargeable battery |
|---|---|
| continuous operating time from full charge | Approximately 6 months |
Operating Environment| operational temperature range | –10 °C to 60 °C |
|---|---|
| loss/gain (monthly rate) | ±15 seconds at normal temperature range |
| energy depletion forewarning function | Yes |
Timekeeping and Display| frequency of crystal oscillator | 32, 768 Hz |
|---|---|
| driving system | Step motor 4 pieces |
| display system | Hour, minute and small second hands in 1-second increments |
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