- Mineral Glass
- Screw Lock Crown
- Screw Lock Back
- Anti-reverse Bezel
- 200-meter water resistance
- Case / bezel material: Stainless steel
- "Double-lock, 1-press, 3-fold Buckle"
- Stainless Steel Band
- Solid Band
- 1-second stopwatch
- Measuring capacity: 29'59
- Measuring mode: Elapsed time
- Date display
- Regular timekeeping
- Analog: 3 hands (hour, minute, second),
- 3 dials (24-hour, stopwatch minutes, stopwatch seconds)
- Accuracy: ±20 seconds per month
- Approx. battery life: 2 years on SR621SW
- Size of case/total weight: 50.3 X 47 X 12.3 mm/176 g
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