CoolChange 2.8'' Wired Bicycle Computer Waterproof Odometer Bike Measurable Cycling Stopwatch Speedometer KIONIX KX022-1020 Heart Rate Sensor:

KIONIX KX022-1020 Heart Rate Sensor: Silicon labs Si1142 OS: Android 4

Build in Microphone

Vibration (Mute) detection

4G Support Language: Multi-language

CoolChange 2.8'' Wired Bicycle Computer Waterproof Odometer Bike Measurable Cycling Stopwatch Speedometer KIONIX KX022-1020 Heart Rate Sensor:Product Features: 2. 8 inch large screen for 4 parts showing data, no need to push button frequently Allow two sets of wheel diameters and other data for bicycle A and bicycle B Night light feature with high brightness light source for a clear view of all data during your night trip Length unit options of kilometer mile Low battery indicator for you to know the working conditions of the odometer Bicycle oil maintenance reminder to secure your