Features1Prevent Slipping: The bike computer adopts a non slip design with a card slot on it, which can prevent accidental loss of the stopwatch and is very firm. 2With Sensor: The sensor of this wired bike computer is installed on the front brake and needs to be fixed with 2 cable ties. 3With Magnetic Head: The magnetic head is installed on the spoke, and the distance between the magnetic head and the sensor should be kept at about 4mm. 4High Accuracy: The wired computer adopts upgraded and stronger magnets to ensure data accuracy, more convenient to use and longer life. 5Easy to Operate: The cycling computer is easy to install and disassemble, with strong practicability, simple operation and convenient use.SpecificationItem Type: Bike ComputerMaterial: ABSBattery Capacity: 210mAhBattery Type: 1 x CR2032 Battery (Included)Package List1 x Bike Computer6 x Straps1 x Magnet1 x English Manual1 x Connector