Features 1、1. Waterproof protection. Immerse in the water for a short time, it is fine in light rain or heavy rain, but it is not recommended to rain for a long time, so as to prevent water from causing accidents. 2、 2. 300 seconds without signal input, screen display will enter standby mode, clock retention. 3、 3. If there is a traffic signal input or press any key, it can revert to the shutdown mode and memorize the data before shutdown. 4、 4. Compact appearance design, multi-function stopwatch is economical and practical. 5、 5. Including: 1 x Bike Speedometer+1 x Manual+1 x Induction Magnet+1 x Battery+1 x Base + Cable Sensor Material: plastic Language: English Screen size: about 1.5 inches Battery: AG10 * 1 Stopwatch size: about 44 * 49 * 15mm/1.7*1.9*0.6inch Features: 1.SPD CURRENT SPEED / Driving speed 2.ODO ODOMETER / Total mileage 3.DST TRIP DISTANCE / Mileage per trip 4.MAX MAXIMUN SPEED /Max driving speed 5.AVS AVAAGE SPEED /Average speed 6.TM ELASPED TIME / Driving time 7.CLK CLOCK / (12H / 24H) Clock 8.SCAN / Automatic cycling function 9. "+" "-" COMPARATOR / Contrast reminder function 10.SEETING SPEED SCALE (KM / M) / Kilometers and miles settings 11.SEETING TYRE CIRCUMFERENCE / Tire circumference setting 12.SEETING THE LAST VALUE OF ODOMETER / Initial setting of total mileage 13.FREEZE FRAME MEMORY / Driving data sampling function 14.AUTO ON / OFF / Switch 15.MAINTENANCE ALERT / Maintenance reminder function Package List 1 x Bike Speedometer 1 x Manual 1 x Induction Magnet 1 x Battery 1 x Base + Cable Senso