Features： 1、Featuring a unique green backlight, our bicycle speedometer ensures clear data visibility day and night. 2、 for daily Cycle, this wireless bicycle computer records every moment of your ride. 3、Vibration alarm design. The bicycle odometer has an internal vibration sensor. Once deployed, it will alarm when touched. 4、The wireless design eliminates handlebar clutter, requiring only a simple setup of the sensor and magnet. 5、4600mAh large capacity. It can be used as a power bank to charge mobile phones, tablets, and electronic devices. Specification： Our bicycle computer is compact, lightweight, and packed with 20+ essential functions to cater to your Cycle needs. Ideal for daily commuting or professional Cycle. Features:  Featuring a unique green backlight, our bicycle speedometer ensures clear data visibility day and night.  for daily Cycle, this wireless bicycle computer records every moment of your ride.  Vibration alarm design. The bicycle odometer has an internal vibration sensor. Once deployed, it will alarm when touched The wireless design eliminates handlebar clutter, requiring only a simple setup of the sensor and magnet. 4600mAh large capacity. It can be used as a power bank to charge mobile phones, tablets, and electronic devices. Specifications: Material: Plastic Battery: 4600mAh Size: 11*5.5*3.5cm/ 4.3*2.2*1.4 in Weight: 177g/ 6.2oz Package list: 1 * bike computer 1 * manual 1 * sensor 1 * ties 1 * wheel magnet 1 * base  1 * wired control button Package List： 1 * bike computer 1 * manual 1 * sensor 1 * ties 1 * wheel magnet 1 * base  1 * wired control button