Professional Memory Stopwatch Large Display Alarm Clock Multi-Function Coach R Sports Stopwatch Timer with 100X2 Lap Split Memory/0.001 Second Timing 1.Stopwatch FunctionThis professional digital silent stopwatch features 2 sets of dual-split 100-lap memory and 1/1000-second accuracy, displaying fastest (FS) and split times. Can be used for basic workouts and sports competitions. Memory recall during surgery.2. [Countdown timer & stroke] Countdown timer/stroke/frequency; segmented in memory mode, the maximum countdown is up to 9:59:59. Metronome frequency range: 10~320 times/minute. Automatic screen, smart power saving function, press any key to display again.3. [Timer function] Time/calendar/alarm clock/pedometer, two sets of alarm clocks can be set, and hourly time reporting function. Calendar display (12/24 hour format optional).4.Multi-purposeWaterproof, sporty, multi-sport track and field stopwatch. Lighter than metal, the buttons are more responsive. Track/Cross Country Timer.5. [Easy to read] Waterproof stopwatch with a large 3-line display, high-end anti-slip stripe design, perfect hand feel, anti-magnetic and shock-proof. Gift boxed makes the perfect gift for coaches, referees and athletes.feature:1/1000 second accuracy100X2 memory featuresCountdown functionclock with date calendarAlarm clock functionMetronome functionTimer/pedometer mute functionLarge three-line displayWindow size: 36 x 23 MM / 1.4 x 0.9 inchesPackage includes1 x stopwatch1 x user manual1 x black lanyardWe place CR2032 batteries during production. If the screen flickers or goes dark, replace the battery in time.Compared with metal materials, it is lighter in weight, more responsive in key response, higher in precision and more comfortable in hand.