Introduction:This is a great tool for its price. This Bike Computer Odometer Speedometer has many useful functions.It is functioned as tracking your training progress in real time. Easy operation and durability make it popular with people.Generally speaking， with it， you can control your riding every moment. Specification:Easy installation， all necessary mounts are includedDigital LCD display shows current time while standing byWater resistent design (can be used while raining)Powered by 1*CR2023 battery (included); Sensor pack powered by 1*23A 12V battery (included)Measures and shows the following information:1. SPD - Current Speed -2. ODO - Odometer (total distance) -3. DST - Trip Distance -4. MXS - Maximum Speed -5. AVS - Average Speed -6. TM - Elapsed Time -7. CLK - Clock (12/24H) -8. Scan "+" "-" comparator -9. Speed comparator10. Setting speed scale (km/h，m/h) -11. Setting tire circumference (0mm~9999mm) -12. Setting the last value of odometer -13. Auto On/Off -14. Freeze frame memory Package Included:1 x LCD Bike Bicycle Computer Odometer1 x Mounting Shoe (Senser)1 x Wheel Magnet1 x Computer Battery6 x Cable Ties1 x User Manual