Velaurs Wireless Bike Speedometer - Waterproof Bicycle Computer with Sensor, Durable & Lightweight for Mountain & Road Bikes - Track Speed, Distance & Time for Cycling Training & Outdoor Adventures

Feature:1. Made from engineering plastic material, it is durable and waterproof, can be used in any conditions, easy to install, equipped with LCD display, which undoubtedly is the ideal companion for cycling.2. It can also track your training progress in real time without needing to replace the battery for a longer range of more than 500 miles (about 800km). Its simple operation and durability also make it popular with people.3. This product should be mounted on the handlebars, put the AG13 battery into the back of the battery slot, in order to initialize the data, you only need to set a normal tire perimeter parameter.4. The sensor should be mounted on the front case, matching the spoke conductor magnet on the spoke, aligned and kept about 3‑5mm / 0.1‑0.2in away from the sensor head, use nylon wire to tie all wires, refer to manual setting for more functions.5. When you put the battery into the battery slot, press the right button within 15 seconds to set the tire circumference, while reading the wheel diameter and peripheral comparison table.How to Use:1. Place the battery into the battery slot2. 15 seconds to press the right button into the tyre circumference setting, please read the wheel diameter and peripheral comparison table, for example, 28 models of wheel circumference 224cm / 88.2in, press the left button to set the three digit value to 224cm / 88.2in (default is 208cm / 81.9in). For more functions, please refer to manual settings.Specification:Item Type: Bike TableWei