Description: Water Resistant Wireless Bike Speedometer Feature: Easy Set Up and Install Wireless Bicycle speedometer with LCD display. Monitor your bikes' speed, distance and riding time. Ideal assistant for bicycle training. Perfect to use when hiking, climbing, riding and other outdoor actives. Make your sports life more free and comfortable. Lightweight, durable Function: SPD: current speed ODO: odometer (0.001-99999KM/M). DST: trip distance MXS: maximum speed AVS: average speed TM: elapsed time CLK: clock (12H/24H). Scan"+" "-" comparator Setting speed scale (KM/H.M/H). Setting tyre circumference:(0MM-9999MM). Seeing the last value of odometer Freeze frame memory AUTO: ON/OFF. Wireless transmission Fast Installation Guide: Mount the bike computer bracket to the bike handle bar. Then mount the sensor to the front wheel fork (front wheel will ensure accurate data), and finally attach the magnet to a spoke in the front wheel (please make sure the magnet is pretty close to the sensor, less than 3mm) Warm Tips of Installation (VERY IMPORTANT!!!) 1. This bike computer has the function of Setting tyre circumference (0mm~9999mm) , so before using, just set your bike wheel size in the bike computer. 2. Once the magnet is installed, attach the sensor to the fork. Before securing the sensor to the front wheel fork by using the plastic tie-wraps, please first test the computer and see if the readings are ok, make any necessary adjustments to the sensor or magnet position. Package Included: 1 x wireless LCD computer speedometer 1 x mounting shoe 1 x wheel magnet 1 x cable ties 1 x sensor ( including sensors -23A batteries) 1 x use manual Note: 1. Manual measuring, please allow 1 ~ 3mm error,thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.