KUCHANG Cyclists Wireless Backlight Bicycle Computer Cycling Bike Odometer Speedometer Multi Function Multi-function wireless bicycle computer with LCD display/ Durable material/ CE certification/ light weight, easy to install 16 Functions: Speed comparing, Average, Maximum, Relative, Riding time, Riding distance, Auto Sleep/wake up, Auto ON/Off, Scan etc.- scientifically arrange your cycling life Backlight Function: Backlight will turn on when press any button during 19:00pm and 7:00am Auto Sleep/Wake: Auto awake by small ball inside movement. Auto sleep when standby within 300 seconds during inactive use, CLK Data will stay, it will start up if any button is pressed or receive signals. Suitable for all types of bicycles: road cycling, mountain biking, folding bike, common bicycle