Features: Case/Bezel Material: Resin Resin Strap Quartz Movement Resin Crystal Digital Display Chronograph Function LED Backlight 1/100-Second Stopwatch Full Automatic Calendar (Automatic Calendar Set To 28 In February) Alarm 12/24 Hours Display Regular Timekeeping Accuracy: ±30 Seconds Per Month Day And Date Display Solid Case Back Buckle Clasp 50M Water Resistance Approximate Size Of Case: 43.1 x 42.2 x 10.5mm