Bicycle speedometer SunDing

This bike computer odometer speedometer has many useful features, built-in clock and automatic shutdown function to save battery power. The installation of the device is simple, all you need to do is fasten the sensor to the fork leg, and the magnet to the spoke. When the wheel is spinning and the magnet "meets" the sensor, the device records 1 revolution, and the speed and distance are calculated based on the circumference.