Bike Computer Blusmart Multifunction Bicycle Computer Speedometer Water Resistant with LCD Backlight Supports wired button control and super responsive wireless digital Anti-interference functionyou can switch different function with one button, convenient to use. 4 Parts LCD display and brighter backlight- 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. 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. Manual Link:https://www.youtube.com/watch?v=_l38s0-zVnY