Function: 1. SPD　CURRENT　SPEED 2. ODO　ODOMETER 3. DST　TRIP　DISTANCE 4. MAX　MAXIMUN　SPEED 5. AVS　AVAAGE　SPEED 6. TM　ELASPED　TIME 7. CLK　CLOCK/(12H/24H) 8. SCAN 9. "+" "-"COMPARATOR 10. SEETING　SPEED　SCALE(KM/M) 11. SEETING　TYRE CIRCUMFERENCE(0mm-9999mm) 12.SEETING　THE　LAST　VALUE　OF　ODOMETER 13. FREEZE　FRAME　MEMORY 14. AUTO　ON/OFF 15. WIRELESS　TRANSMISSION Specifications: 1. Type:wireless-type 15-function 2. Material: plastic electronic components 3. LCD display 4. Size:46mmX46X19mm package content 1 X Wired LCD Bike Bicycle Odometer Speedometer 1 x Transmitter Sensor 1 x Magnet 1 x Bracket 2 x strips of cables ties 1 x battery 1 x user manual