Mute and Luminous Function - Stopwatch with mute and luminous mode, adjust at will, absolute silence, without "BEEP". Allowing you to use it at night. 2 memory - 1/100 Second Precision Timer, meet the most basic sports. Multifunctional Stopwatch - Luminous function, Mute function, Stop function, Timing function, Alarm function, Clock function, Countdown function, Metronome etc. Ergonomic design and large screen - Has a comfortable hand feeling and a cool appearance. Clear display and large number.