This small size and light weight speedometer and odometer is for measuring both and riding time, especially suitable for cycling or fitness enthusiasts. The LCD display with big numbers allows you to easily see the states even you are riding. Its waterproof design makes it more convenient and durable._x000D__x000D_Feature_x000D__x000D_- Color: Black._x000D_- Material: ABS._x000D_- Size: 4.6 x 4.3 x 4.9cm_x000D_- Multi-functions: Can be used to measure both and riding time, especially suitable for cycling or fitness enthusiasts._x000D_- WATERPROOF: Its waterproof design makes it more convenient and durable._x000D_- LCD Display: LCD display with big numbers allows you to easily see the states even you are riding. Backlit LCD design ensures the display is always readable, even for night time cycling._x000D_- Compact design: small size light weight speedometer is easy to install on the handlebar_x000D_- Compatibility: Road bicycles, mountain bikes, folding bikes,and other common bicycles are compatible with this computer.Packing list:1 xBicycle Speedometer and timer_x000D_1 x Mounting Shoe_x000D_1 x Instruction_x000D_1 x Wired Sensor_x000D_1 x Magenet_x000D_Some Ties