Multi-functions: Our Bike Computer Odometer Speedometer can record the CURRENT SPEED, ODOMETER, TRIP DISTANCE, MAXIMUM SPEED, AVERAGE SPEED, ELAPSED TIME, CLOCK during your biking! Simple Steps Setup: 1 - Install Batteries(Both Sensor and Bike comouter requires batteries) 2 - Reset and Pair the computer before first use in order to achieve the most accurate results 3 - Install the Seat 4 - Mount the Sensor on the front wheel 5 - Mount the magnets on the front wheel's spoke 6 - Set the computer into the Seat Product Description: Package Weight:100g Dimensions:56mm*41mm*20mm Screen: LCD display Functions: 1. SPD: current speed 2. ODO: odometer 3. DST: trip distance 4. MXS:maximum speed 5. AVS: average speed 6. TM: elapsed time 7. CLK: clock(12H/24H) 8. SCAN: Automatic circulatory function 9. Comparison prompt ("+" "-") 10. Miles set (KM / hr, M / hr) 11. SET: tire circumference 12. The total length of the initial value setting (SETTING TYRE CIRCUMFERENCE) 13. Driving data sampling (FREEZE FRAME MEMORY) 14. Maintenance reminder(MAINTENANCE ALERT) 15. AUTO ON/Sleep Mode(After 300 seconds) Package Includes: 1*seat 1*Magnet 2*Stickers 2*CR2032 Battery 1*wireless sensor 6* Plastic tie-wrap 1*Bicycle Computer 1*User Manual