- Regular timekeeping
- Analog: 3 hands (Hour, minute, second), 3 dials (date, day, 24-hour)
- Accuracy: ±20 seconds per month
- Approx. battery life: 2 years on SR621SW
- Size of case / total weight
- EF-305D : 53.5 X 40.0 X 10.7 mm / 127 g
Note: The product shown may vary slightly from the picture.
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