- Regular timekeeping:
Analog: 3 hands (Hour, minute, second), 3 dials (date, day, 24-hour) - Accuracy: ±20 seconds per month
- Approx. battery life: 3 years on SR916SW
- Size of case /total
weight
EF-302D ..............… 47.5 x 40.0 x 10.4 mm / 122 g
EF-303D ..............… 48.0 x 40.0 x 10.4 mm / 123 g
EF-304D ..............… 45.5 x 38.5 x 10.0 mm / 111 g