Blusmart Mutifunction Bike Computer Water Resistant with Thermometer Odometer Speedometer of Wide 4 Parts LCD Display Bright Backlight Wide 4 parts LCD display- You can read the trip distance , total trip time, clock, current speed at the same time without any button switching during riding. 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. Simple tire size setup appears on the screen when the battery has been installed, with one figure flashing, choose the correct wheel circumference from the table of user manual. Supports thermometer function and over speeding reminder modes, in very sensitive and responsive sensor. Accurate data results, super clear characters, complete in multifunction modes.The sensor wire measurement is 33 inch.