Wireless connection: This bicycle computer uses a wireless connection, which allows easy installation and operation. No cables or additional components are required, making cycling more comfortable and safer. Multiple functions: this bicycle computer offers various functions, including speed measurement, distance measurement, time measurement and more. This allows you to better plan your training and improve your driving behaviour. Large LCD display: a high-resolution, backlit display that is easy to read even in direct sunlight or in the dark, so you can retrieve the latest movement data anytime and anywhere. Waterproof design: with a waterproof housing, this bicycle computer is robust and resistant to rain and other weather conditions. So you can use it in any weather without hesitation. Automatic sleep/wake up: If the bicycle speedometer receives no signal within 4 minutes, it automatically switches to sleep mode to save power. Simply press any button or enter a motion signal to wake it up. Compatible with various bicycle types: this bicycle computer is compatible with different bicycle types, including mountain bikes, road bikes and city bikes. This makes it a practical choice for any cyclist, regardless of their riding style or experience. 100% brand-new high quality Backlight color: green Size: about 2.1 inches Battery: CR2032H Application: mountain bike, road bike, fixed equipment. Features: Bicycle odometer with LCD backlight. Portable, durable and convenient. Readable LCD screen, large screen. Easy to control, touching and fashionable, it is the perfect companion for your bicycle. Easy to install and fixed with installation accessories. It is very suitable for hiking, mountaineering, horseback riding and other outdoor activities. An ideal assistant for bicycle training. The timing function can also be used as an excellent device during the journey. Anti-signal interference. Backlight shows super waterproof and powerful machine core, which is easy to use. note: Please allow small errors due to manual measurement. The colors of different monitors will be slightly different.