Brand:TimoomColor:BlackMaterial:Acrylonitrile Butadiene StyreneItem Dimensions LxWxH:2.36 x 2.91 x 0.8 inchesItem Weight:72g1.Stopwatch functionthis professional Digital Silent stop watch has 2 groups dual-split 100 Laps memory and 1/1000 second accuracy ,displays the fastest(FS) & segmented time.could use for basic exercise and sports games.memory recall during operation.2.Countdown Timer & StrokeCountdown timer / Stroke/frequency; Take splits during recall mode,The maximum countdown long up to 9:59:59. Metronome frequency range: 10 ~ 320 times / min .automatic screen, intelligent power saving function, press any key to display again.3.Timer functiontime/calendar / alarm /Pacer,Two sets of alarm clocks can be set, hourly chime function. Calendar display (12/24 hour system can be selected).4.Multipurpose Water resistant, Sport Type,Multi-Sport track and field stop watch .the weight is lighter than metal ones,the button is more responsive.Timer for track/cross countr races.5.Easy To Read waterproof stopwatch with large 3 row display,high-end and non-slip stripe design, perfect hand feeling, anti-magnetic and shockproof. Gift box packaging and the perfect present for the coach,referee and sports people.Features:1/1000-Second Accuracy100X2 Memory FeatureCountdown FunctionClock with Date calendarAlarm Clock FunctionMetronome FunctionTimer /pacer silent FunctionLarge Three Row DisplayPackage Includes 1 X Stopwatch 1 X User Manual1 Black Lanyard We put the battery in place at the time of production. If the screen is blinking or dimming, please replace the battery in time. Compared with metal material, the weight is lighter, the button is more responsive, the accuracy is higher and the hand feels more comfortable.