The LCD screen makes it easy to watch and go With the detachable head unit, you can quickly and easily mount and dismount the bike speedometer WITH ALMOST NO DELAY---Using a premium chip, the bike computer can wirelessly capture real-time data It can help you plan and analyze your bike training WIRELESS WATERPROOF---Easy installation that only takes a few minutes for the wireless bike speedometer without the need to install complicated cables Thanks to its waterproofness, it can be used on rainy days Dry immediately after use AUTO ON / OFF BACKLIGHT & 3 COLORS---The bicycle speedometer has 3 backlight colors: green/blue/red You can adjust the backlight permanently when you need to ride at night If no signal is input after 5 minutes, the screen will turn off automatically to save battery. When you move or press any button, the computer turns on automatically