Bike Computer, Blusmart bicycle odometer,Wireless Water resistant Bike Speedometer Cycling Multi Function Wired control and digital Anti-interference: you can switch different function with one button, convenient to use. LCD and Bright Screen: You can read the trip distance , total trip time, clock, current speed simultaneously during riding, especially in the dark night. Waterproof:You can ride your car in the rainy day without any worrying. It effectively help you to track your progress and improve your stamina. Easily and securely to install: Its lightweight, durable design, and comprehensive riding records, making your riding life more convenient and funny. Multi-functions: Supports thermometer function and automatic wake-up function mode, battery saver device, in very sensitive and responsive sensor. Accurate data results, super clear characters, complete in multifunction modes. Teaching Link:https://www.youtube.com/watch?v=_l38s0-zVnY