High quality material and mute function - Made of stainless steel, durable and shockproof.Stopwatch with mute mode,adjust by yourself,absolute silence, no "BEEP" anymore.^ 100 lap memories - Very convenient with an accuracy of 1/1000 seconds,meet the most basic use. Luminous function - Side button can turn on light for few seconds,making you could use it at night.^ Multi-function stopwatch - Shutdown function,Timing function,Alarm function,Clock function,Metronom for sports coaches,referees,athletes,football players,runners etc.You can meet all your basic needs.^ Large display and ergonomic design - Large screen and extra large number makes it easy to view the time and record data. The ergonomic design for your hands feels comfortable and flexible when you press the buttons.^ After-sales-If you have any questions about our products, please contact us in time.