100-meter water resistance, Case/Bezel Material Resin, Resin Band, LED light, Afterglow, World time, 1/100-second stopwatch, Countdown Timer, 5 Daily Alarms, Hourly Time Signal Full auto-calendar, Analog 2 hands hour, minute hand moves every 20 seconds , Analog Digital, Accuracy 30 seconds per month, Approx. battery life 5 years on CR2016 Quartz Movement Case Diameter 51.4mm Water resistant to 100m 330ft in general, suitable for swimming and snorkeling, but not diving 100-meter water resistance, Case/Bezel Material Resin, Resin Band, LED light, Afterglow, World time battery life 5 years on CR2016 Quartz Movement Case Diameter 51 4mm Water resistant to 100m 330ft in general, suitable for swimming and snorkeling, but not divin