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Frequency and Timing| frequency of crystal oscillator | 32, 768 Hz |
|---|---|
| loss/gain (monthly rate) | Less than 15 seconds |
Operating Environment| operational temperature range | Between -10 ºC and +60 ºC |
|---|
Display| display function | Hour, minute, second, date, day |
|---|
Battery| battery type | SEIKO SR43SW 1 piece |
|---|---|
| battery life | about five years |
The watches have been water-tested to 25, 75 or 125 atmospheres of pressure/bar as shown in the table below.
Check the watch operates normally, crown locked, strap secure, bezel aligned, and time/calendar set correctly.
Do not operate the crown when wet. Avoid hitting the watch against hard objects.
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