MULTIFUNCTIONAL: The built-in motion sensor will wake up automatically when you start cycling, then measures your speed, distance, riding time, temperature, etc. All you need to do is ride safely, this Bicycle Computer will record all the data you needs. HUMANIZED DESIGN: The cycling odometer is wireless and waterproof, makes it convenient to install on your handle bar and durable enough for you to use in rainy days. Powered by button battery (included), easily change battery when it is dead. LCD DISPLAY: Equipped with a large screen with displaying big numbers, which allows you to read the statistics from this bicycle speedmeter more easily, safely and conveniently while cycling. Just a quick glance and you have seen the data you wanna know. BACKLIGHT DISPLAY: This cycling logger has backlight function so that you can view clearly during the night or in the tunnel, it will automatically turn on and last for a few seconds when gently touch on the MODE or SET button, very convenient. WIDELY FITS: The speedmeter is suitable for all types of bicycles, such as road bike, mountain bike, folding bike, common bicycle and scooter. Also can be used for camping, hiking, climbing and many other outdoor activities, great gift for bike lovers.