High quality material and mute function - ABS, very durable. Stopwatch with mute mode, absolute silence, over; 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 of hours, minutes, seconds, day of the week, month and day. 2.60 memory slots with 1/100 second accuracy 3. The longest duration: 9 hours 59 minutes 59 seconds 4. In clock mode, press and hold ; Fashion ; for three seconds to turn off (on) the device. 5. In clock mode, press and hold ; START/STOP; for three seconds, turn on (off) the sound Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be some color difference, the actual object received shall prevail.