Stainless Steel Case Stainless Steel Bracelet Resin Crystal Digital Display Electro-luminescent Backlight 1/100 Second Stopwatch Daily Alarm Hourly Time Signal Automatic Calendar Day And Date Display 12/24 Hours Display AM/PM Display Accuracy: ±30 Seconds Per Month Screwed Case Back Deployment Clasp 30M Water Resistance Approximate Case Diameter: 36mm Approximate Case Thickness: 10mm