Features: Resin Case Bio-Based Resin Strap Quartz Movement Resin Crystal Green Dial Digital Display Daily Alarm Hourly Time Signal LED Backlight Afterglow Full Auto Calendar Display 1/100-Second Stopwatch Regular Timekeeping Month, Day And Date Display Screwed Case Back Buckle Clasp Splash Resistant Approximate Case Diameter: 24.1mm Approximate Case Thickness: 9.1mm