Features:Case / Bezel Material: Stainless SteelStainless Steel BraceletQuartz MovementMineral CrystalChronograph Function1/10-Second StopwatchRegular TimekeepingAccuracy: ±20 Seconds Per MonthLuminous Hand And IndexDate DisplayScrew Lock BackOne-Touch 3-Fold Clasp100M Water ResistanceApproximate Case Diameter: 54.1mm × 49.5mmApproximate Case Thickness: 11.7mm