16 Different Functions: This bike computer with 16 functions can meet your various cycling needs by tracking your cycling data such as speed comparison, average, maximum, relative, cycling time, ascent, and so on. Wireless and Waterproof Design: Trendy and novel design makes this wireless and waterproof bicycle speedometer more durable. You don't have to worry about rainy days, but avoid prolonged exposure to rain and water as it can absorb. Large LCD Screen with Green Night Light: This bike computer with green backlight in a large LCD screen allows you to easily read the digital, especially in the deep and dark night or in the long tunnel. You can easily turn on the lights by pressing a button on MODE or SET. Convenient and Fast Recording: This odometer can record speed and kilometers without any delay. When you cycle again, it can start your cycling time immediately. Wide Application: The bike odometer is suitable for all bikes such as mountain bikes, road bikes. but please follow the installation instructions. Functions: 1. Record riding speed (SPD) 2. Record total distance mileage (ODO) 3. Record single track distance (DST) 4. Maximum riding speed (MXS) 5. Display average riding speed (AVS) 6. Display riding time (TM) 7. Display clock in 12/24 (CLK) 8. Scan 9. Instant comparison (\"+\" \"-\") 10. Set miles (KM/hr, M/hr) 11. Tire circumference is set (SET) 12. Total time for setting initial value (TIRE CIRCUMFERENCE SETTING) 13. Driving data sampling function (FREEZE FRAME MEMORY) 14. Switch: automatic wake-up from sleep mode (AUTO ON/OFF) 15. Interference resistance signals 16. Backlight This is a \"motion-detected\" bike computer, it will be in sleep mode if no motion is detected, when motion is detected the bike computer will turn on automatically. There is a \"motion-detected\" roller switch inside the computer, it will vibrate and make noise, please note that the noise is caused by the switch, the product is not broken or used. Tips for use: 1. Before installing this speedometer, read the instructions carefully! Then install it only on the front wheel. 2. The distance between the computer unit and the sensor did not exceed 60 cm, then the distance between the sensor and the magnet did not exceed 2.5 mm, the smaller the better. 3. Refer to the instructions to set the data and use it! Package contents: 1 x Bicycle Speedometer 1 x Sensor 1 x Magnet