Features: Case / Bezel Material: Stainless Steel Leather Strap Quartz Movement Mineral Crystal White/Silver Dial Chronograph Function 1/10-Second Stopwatch Regular Timekeeping Accuracy: ±20 Seconds Per Month Luminous Hand And Index Date Display Screw Lock Back Buckle Clasp 100M Water Resistance Approximate Case Diameter: 48.5mm×43.8mm Approximate Case Thickness: 11.6mm