joycune Wireless Bike Computer with LED Front Light Horn Speedometer

Featuring a unique green backlight, our speedometer ensures clear data visibility day and night. Perfect for daily cycling, this wireless computer records every moment of your ride. Vibration alarm design. odometer has an internal vibration sensor. Once deployed, it will alarm when touched. wireless design eliminates handlebar clutter, requiring only a simple setup of sensor and magnet. 4600mAh large capacity. It can be used as a power bank to charge mobile phones, tablets, and electronic devices.