Mineral Glass
Screw Lock Back
50-meter water resistance
Case / bezel material: Stainless steel
Stainless Steel Band
One-touch 3-fold Clasp
Solid Band

1/10-second stopwatch
Measuring capacity: 29'59.9''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Date display
Regular timekeeping
Analog: 3 hands (hour, minute, second),
3 dials (stopwatch 1/10 seconds, stopwatch minutes, stopwatch seconds)
Accuracy: ±20 seconds per month
Approx. battery life: 2 years on SR621SW
Size of case: 47 × 43 × 11.2 mm
Total weight: 150 g