CoolChange Bicycle Computer Wireless Cycling Computer Speedometer Odometer Rainproof MTB Bike Computer USB Rechargeable
Specification:
Product: CoolChange bicycle computer 
Color: Black
Screen Size: 2.2 inch
Battery: CR2032
Size: 40 * 65 * 14mm
Weight: About 100g
Features: USB charging/long time backlight/waterproof
 
Main Features: 
Press the left and right keys at the same time to turn the backlight mode on, the backlight can last for a long time and you can turn the backlight mode on or off according to your needs.
2 keys for switching and the keys are at the bottom of the bicycle computer, more convenient to operate
Press the "S" key for a long time to clear all the previous data
Press the "M" key for a long time to enter the setting mode
5 split screens display and each interface has 5 functions, which is more convenient to browse
Package Includes:
1*  Wireless Bike Speedometer