About This Stopwatch function:400 Lap memory and 0.01 second accuracy. multi-functional , three row display, two sets of record memory (Normal timing--Stopwatch mode and cumulative timing--Stopwatch L mode) . Looking up records up and down, read the Average(AVE) time is available . Backlight Stopwatch : With LED back light, stopwatch could use even in night or other weak-light days . And a Plastic film on screen , protect led screen . Please remove the film before using. Timer : Countdown timer up to 9 hours, 59 minutes, 59 seconds . Also with Pacer ,Alarm clock , Time and date display 12h or 24h settings are optional functions . Smart power saving : Automatically shut down if no operation within 10 minutes. Battery could be replaced when the power is run out . No Beeping Sounds : The stopwatch beeping sound could be turn off or on according to your needs . When you turn off the beeping sounds and hold down the button, there are not bells or whistles . Overview Color : 400 Lap-backlight - Plastic Brand : Rolilink Material : Plastic Product Dimensions : 2.91"D x 2.36"W x 0.85"H Number of settings : 7