The digital chronographs allows you to track your total run time and see individual lap times 6 customizable interval timers with looping feature and 3 customizable alarms Save up to 10 files with 30 laps of run data right on your wrist An enhanced setting of the EL Backlight that allows easier or automatic activation of the light while you're running at night Water resistant to (50 M): withstands rain and splashes of water, but not recommended for showering, swimming or submersion in water.