Cycle Computer / Cycling Speedometer with 14 functions: 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. RPM - Rotation per minute 8. CLK - Clock (Icon) 9. SCAN - (Icon) 10. "?" / "?" Comparator 11. Setting Speed Scale (km/h , mile/h) 12. Setting Tire Circumference (100CM-239CM) 13. Setting the last value of Odometer 14. Auto On / Off Also features two buttons design for operation, battery type: AG13 battery, English instructions and Color:Black.