The LCD screen makes it easy to watch and go With the detachable main unit, you can quickly and easily mount and dismount the bike speedometer ACCURATE WITHOUT DELAY --- Using a premium chip, the bike computer can wirelessly capture real-time data It can help you plan and analyze your cycling training WIRELESS WATERPROOF --- Easy installation that takes only a few minutes for the wireless bike speedometer without needing to install complicated cables Thanks to its waterproofness, it can be used on rainy days Dry immediately after use AUTO ON/OFF BACKLIGHT & AMP; 3 COLORS --- The bike 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 automatically turn off to save power When you move or press any button, the computer will turn on automatically