Package included: 1xWireless Bicycle Speedometer 4xTie 1xFixed tube 1xConnect a 1xThe clock base 1xclock 1xCable induction 1xThe fixed frame 1xConnecting rod 1xThe instructions The main function ●Dynamic display of driving mileage, cycling time, real-time speed, travel time, current time, current date; ● Check the fastest speed, average speed, total travel time, total mileage, and current temperature at any time; ● With luminous function, using high-end high-brightness cold light source, allowing you to check the information at a glance at night 【17:00 PM - Press any key to light up in the morning at 8:00 AM, and it will automatically turn off after about 4 seconds. Press any key at other times is off, (the night light is not very bright); Please be sure to see clearly. 】 ● With metric/imperial unit selection, suitable for different users' hobbies at home and abroad; ● vehicle fueling / maintenance tips to protect your car's performance and longevity; ● With 12/24 hour system, Celsius / Fahrenheit temperature unit selection, perpetual calendar function, let you travel more confident; ● With stopwatch function, allowing you to accurately grasp the game data; ● Speeding reminds you to drive more safely; ● Wide range of applications, suitable for 4"-40" bicycles/electric vehicles, even motorcycles; ● speed comparison instructions, keep abreast of speed changes; ● sensors, stable performance, accurate speed, ultra-wide working temperature; ● Ambient temperature display, clock function; ● Automatic standby function ● Stylish exterior light design, anti-rainwater design, it will wipe, easy to disassemble; [Details of specific functions] 1. SPD CURRENT SPEED / driving speed. 2. ODO ODOMETER / total mileage (0-99999 km/mile). 3. DST TRIP DISTANCE / single trip mileage. 4. MXS MAXIMUM SPEED / driving speed. 5. AVS AVERAGE SPEED / Average Speed. 6. OTM TOTAL TRIP TIME / accumulated travel time. 7. TM TRIP TIME / Single trip time. 8. RTM RIDING ALL TIME / Single trip time. 9. CLK CLOCK(12H/24H)/ Clock. 10. SW STOPWATCH / Stopwatch. 11. TEMPERTERATURE / Measure external temperature function (-20°C~90°C) 12. TM UP TRIP TIME UP / driving time is counted. 13. TM DN TRIP TIME DOWN / Countdown of driving time. 14. TRIP UP TRIP DISTANCE UP/ mileage calculation. 15. TRIP DN TRIP DISTANCE DOWN/Driving mileage countdown. 16. "+" "-" COMPAPATOR / Contrast hint