ITEM NAME:1 piece Waterproof Cycle Bicycle Computer Speedometer Odometer Hot Descriptio n Description: Tire circumference setting function 1. Set according to the circumference of the bicycle tire. Speed function: 2. Instantaneous driving speed SPD 3. Maximum driving speed MXS 4. Average driving speed AVS 5. Compared with the average speed, â– ² â– ¼ wheel revolutions function 6. R-mile function per minute of wheel running (inch/metric switch) 7. Total mileage ODO 8. Single driving distance DST 9. The total mileage initial value is set. If the battery is replaced, the pre-replacement value can be set to the initial value. Time function 10. Driving DurationTM 11. Clock (12 hours / 24 hours switch) CLK automatic cycle display function 12. ODO, DST, MXS, AVS, TM, R, CLK functions, one content automatically scrolls every 4 seconds SCAN Driving data sampling function 13. Instant data sampling for professional testing with DST TM AVS MXS Power saving function There is no input signal within 14.30 seconds, and it automatically enters the power saving mode, showing only the time. Maintenance reminder function 15. When the total mileage reaches the set maintenance value, the wrench symbol is displayed to remind the maintenance bicycle. water-proof 16. Has a good waterproof function. Specifications: material: plastic Colour: Black Size: 4.6cm*4.5cm*1.9cm Package Included: Mountain Bike Code Table*1 Note: The probe and magnet maintain a sensing distance of 1-3mm. Otherwise the speed value will jump! Whatever the ending's perfect or not, you can't disappear from my world 1 piece Waterproof Cycle Bicycle Computer Speedometer Odometer Hot.When the total mileage reaches the set maintenance value, the wrench symbol is displayed to remind the maintenance bicycle. Clock (12 hours / 24 hours switch) CLK automatic cycle display function. Single driving distance DST.