This bicycle computer odometer speedodemeter design with function of water resistance can be used for rain day. It can display current speed, max speed, average speed, trip distance, and more, and also gauges total distance and elapsed time; auto start/stop function. It also features LED function, you can set it shine during 19:00 to 09:00. * Compact design make it easy to install, and it also features digital coded wireless, which can make it convenient to program. * Bike Bicycle Rear Back Lamp Light with constant and flashing modes. * Mounts horizontally and vertically(Includes rear carrier bracket). * Kit Includes: 1 x LCD Bike Bicycle Computer Odometer Speedometer(with 3 x Cable Ties, 1 x CR203 Button Battery for Bike Computer, 1 x User Manual, 1 x Wheel Magnet, 1 x Sensor, 1 x Mounting Shoe), 1 x Bright 5 LED Bike Bicycle Rear Back Lamp Light.