LED Light Afterglow Button Operation Tone On/Off 1/100 Second Stopwatch Countdown Timer 5 Daily Alarms Hourly Time Signal Regular Timekeeping Full Auto Calendar 12/24 Hours Display Day And Date Display Screwed Case Back Buckle Clasp 100m Water Resistance Approximate Case Diameter: 43mm Approximate Case Thickness: 13mm Approximate Lug Width: 14mm