EFR-538BK-3AVUDF

Case / bezel material: Stainless steelStainless Steel BandOne-touch 3-fold ClaspMineral GlassGray ion plated bandScrew Lock BackBlack ion plated bandGray ion plated caseBlack ion plated case100-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