EFR-538D-1AVUDF

Case / bezel material: Stainless steelOne-touch 3-fold ClaspStainless Steel BandMineral GlassScrew Lock Back100-meter water resistance1-second stopwatch Measuring capacity: 29'59 Measuring mode: Elapsed timeDate displayRegular timekeeping Analog: 3 hands (hour, minute, second), 3 dials (timekeeping 24-hour, stopwatch seconds, stopwatch minutes)Accuracy: ±20 seconds per monthApprox. battery life: 2 years on SR621SW