YueYueZou&reg; Multi Function Bike Meter Wireless 15 functions cycle computer, odometer record riding speed ,distance, and riding time etc., help cyclist scientifically arrange cycling training Friendly setting- Km/h or Mile/h unit selectable; Auto ON/OFF Mode- Intelligent power saving LCD display/ Durable material/ CE certification/ Intelligent restore/ Simple install and use Suitable to all types of bicycles: road cycling, mountain biking, folding bike, common bicycle etc. Easy to install(only on the front wheel) Small size, light weight, Easy to install. Attach the sensor to the front left fork, the distance between computer and the sensor can not exceed 60cm. Mount the magnet on the spoke with 1mm clearance to the sensor.