High quality material and mute function - ABS, very durable. Stopwatch with mute mode, absolute silence, no more "BEEP", just change the mode between silent and normal. 60 memories - Very convenient with 1/100 second accuracy, meet the most basic sports. Multifunctional stopwatch - stop function, timing function, alarm function, clock function, countdown function, metronome for sports trainers, referees, athletes, footballers, runners, etc. Large Screen and Ergonomic Design - With large screen and super large number, easy to view time and record data. The ergonomic design makes your hands comfortable and flexible when pressing the buttons. Stopwatch with gift - this product comes with a high quality whistle, very clear sound, you don't need to buy one. Material: ABS; Colors: black Features: 1. Display hours, minutes, seconds, day of the week, month and day. 2.60 memory slots with 1/100 second accuracy 3. The longest time: 9 hours 59 minutes 59 seconds 4. In clock mode, press and hold "Mode" key for three seconds to turn off (on) the device. 5. In clock mode, press and hold "START/STOP" key for three seconds, turn on (off) sound Package List: 1 x Stopwatch 1 x manual (english)