Functions: Large LCD screen, Wireless Type Applicable to tire size: 16-29, 650C (20mm/23mm), 700C (Tubular-20mm-38mm) 1. SPD CURRENT SPEED 2. ODO ODOMETER (0-9999km/m) 3. DST TRIP DISTANCE 4. MXS MAXIMUM SPEED 5. AVS AVERAGE SPEED 6. TTM TOTAL TRIP TIME 7. TM TRIP TIME 8. RAT RIDING ALL TIME 9. CLK CLOCK (12H/24H) 10. SW STOPWATCH 11. TEMPERATURE 12. TM UP TRIP TIME UP 13. TM DN TRIP TIME DOWN 14. TRIP UP TRIP DISTANCE UP 15. TRIP DN TRIP DISTANCE DOWN 16. COMPAPATOR 17. MAINTENANCE ALERT 18. CARE REMINDER 19. OVER-SPEED REMINDER 20. LOW BATTREY INDICATOR 21. SETTING TYRE CIRCUMFERENCE 22. SETTING THE LAST VALUE OF ODOMETER 23. SETTING SPEED SCALE (km/h, m/h) 24. FREEZE FRAME MEMORY 25. AUTO BACK LIGHT, LCD BACK LIGHT 26. WIRELESS DIGITAL CONTROL 27. SLEEP MODE, WIRELESS WAKE UP, TOUCH SCREEN Package List: 1 * LCD Bicycle Computer 1 * Sensor Transmitter 1 * Mounting Shoe 1 * Wheel Magnet 1 * Set of Cable Ties 1 * User Manual (English) 2 * 2023 3V battery Note: Please be noted that this speedometer features in auto wakeup which is activated by a rotating sensory ball inside. This feature saves the trouble to press the meter by hand for work. And there is audible sound when the rotating sensory ball is in movement, which is the normal and functional state. Please be assured that this audible sound does not mean there are loose components inside or this meter is in malfunction. Please reconsider this before you place the order. Thank you.