GOHUOS Men's LED Analog-Digital Sport Multifunction Dual Time Alarm Chronograph Calendar Watch-Black Multiple Function: Water proof, Alarm Clock, Led Light,chronograph, date, week. Clearance LCD" mixing traditional analog display lets you know the time more accurately no matter where you are. Support stopwatch function, especially suitable for sports use. EL backlight lets you know the time clearly in darkness. 30M waterproof design(not for swiming, diving, showing,etc), good choice suitable for outdoor sports use.