: This digital bike computer is a good partner for your cycling. It can display much information, such as speed, distance, time and so on. The digital cycling computer is designed with a clear LCD screen and the backlit function let you can easily see the screen even in the dark. The LCD bike odometer can display current speed and can help you to control your speed and it also reminds you about bike oil. The bike computer features simple and fast installation, easy to install and replace. The LCD bike speedometer use ABS to make the case, which is strong and sturdy, not easy to be damaged. Specification: Material: ABS. Voltage: DC3V Battery: 1x CR2032 battery(Battery not included) Working temperature: - 10 to 60 degrees Celsius Size: 5.5x4.5x4.5cm. Package Include: 1x Cycling computer.(Battery not included) 1x Cable tie 1x Wheel accessory. 1x Rubber gasket 1x User manual (English)