Feature:1. Support 12/24 hour system, timing accuracy can 1/100, display time statistics exercise time.2. Alarm/calendar/timer function, accurate alarm, plan time to improve efficiency.3. Multifunctional sports stopwatch, waterproof, provides the practicality of a stopwatch.4. High‑quality materials, anti‑vibration function, it will not affect the recording and testing.5. It is a good tool for school physical education equipment, suitable for sports meets, gymnasiums and other places.Specification:Item Type: StopwatchMaterial: ABSColor: Black + BlueModel: ZSD-809Function: Alarm/calendar/timerPower Supply: 1 x AG13 button battery, 160mAh (built-in) Package List:1 x StopwatchNote:Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.