Feature:1. Display speed, average speed, maximum speed, time, distance, temperature, trip time, date, etc.2. Black background, white digital and backlight allow you to read the data clearly at any time and any angle.3. Auto power off and auto or manual wake up are all available, quite convenient to use.4. Powered by CR2032 battery,longer life and lower power consumption.5. Easy to install onto the handlebar with cable ties provided.Specification:Specifications: Material: ABS Color: Black Type: Black background and White digital or White background and Black digital ( optional ) Diameter: 62 mm or 2.4 in Weight: 87 g or 3.1 oz Functions: 1. Speed (SPD): 0-99.9 km/h M or H 2. Average speed (AVS ): 0-99.9 km/h M or H 3. Maximum speed (MXS): 0-99.9 km/h M or H 4. Odometer (ODO): 0-9999.9 KM M 5. Speed Comparator 6. KM or M selectable 7. Auto Start or Stop 8. Odometer Save Function 9. Trip Distance (DST): 0-9999.9 KM M 10. Trip Time (TM): 9:59:59 11. Clock: 12 or 24 hours 12. Auto Scan 13. Auto Power Off 14. Calories 15. Fat Burned 16. C andamp F selectable 17. Highest or Lowest Temperature memory 18. Maintenance program 19. LED Backlight 20. Stopwatch ( SW) 21. Estimated arrival time ( ETA) Package List:1 x Bike Computer1 x Nut1 x Transmitter1 x Magnet Screw2 x Zip Tie1 x Rubber