INBIKE Waterproof Bike Computer Wireless MTB Bike Odometer Rainproof Stopwatch Speedometer LED Digital Rate Watch (White Backlight) This item is made of high quality material with fine process, it is light, portable, durable, waterproof, high and low temperature resistant. The screen is bright and clearly shows the time, average speed, maximum speed, distance, etc. This item is perfect for lovers of horse riding. Functions: 1. Made of the highest quality material, light, durable and durable. 2. Waterproof rubber ring for safe use in rainy days. 3. Display of time, average speed, maximum speed, distance etc. 4. Easy installation on bike and motorbike. 5. Perfect for lovers of horse riding and motorbikes. 6. White backlight Specification: Material: Plastic Power: 1 * 3V battery (included) Size: approx. 44 * 6 * 15mm / 1.73 * 0.24 * 0.59in Weight: approx. 100 grams Package includes: 2.1 inch wireless bike computer: 1 * Odometer 1 * wireless base 1 * Wireless Base Sensor 1 * magnet 2 * Adhesive sticker 4 * straps 1 * User Manual One button switch / easy operation Press "M" button to switch between 4 different interfaces and multiple functions Long battery life, low consumption Only one 2032 button battery, low consumption and long service life Open the battery cover with a coin Cycle computer control method Method: put the computer into the base. Then he holds the launcher with one hand and the magnet with the other. Walk towards the magnet for the launcher and move it up and down. It is normal if there is a speed display. The principle of operation of the wireless version wireless distance 70 cm / 27.55 inch the distance between the magnet and the launcher should be about 5 mm How to install a magnet and a launcher Wireless bike computer Wireless Launcher requires button cell 2032. Secure the magnet with the screws. The magnet can be aligned with the top or bottom of the launcher. The distance should be approximately 5 mm. How to install a computer How to Install a Wireless Cycle Computer 1, the computer is attached to the steering wheel with straps 2, a magnet is attached to the spoke. The launcher is attached with straps. 3, put the computer into the base