Case / bezel material: Stainless steel
Resin Band
Mineral Glass
Screw Lock Back
50-meter water resistance
1-second stopwatch
Measuring capacity: 29'59
Measuring mode: Elapsed time
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 : 51.5×44×10.9mm
Total weight : 91g