🚴 CYCLESPEED Waterproof Bike Speedometer USB Rechargeable - 21-in-1 Wireless Bike Computer with Backlight, Auto On/Off Odometer - Mini Bicycle Speedometer with 5 Language Options Review

【21 Multi-functions】There have 21 functions on this bicycle computer that could meet all your needs in riding, please scroll down to see details. And please mention that before canceling last trip(Last trip distance, time and so on), please record total distance and time, after deleting data, enter the data manually on setting mode. 【USB rechargeable and waterproof】You never need worry about change battery, we designed this rechargeable speedometer for bike to provide users a better riding experience. A full charge could work for 150 hours without backlight or 12 hours with backlight. There have one more advantage: no battery box and cover, so it have a better waterproof performance(IPX7). Even you are riding in heavy rain, it could still work with you, but don’t put the wireless bike speedometer under water. 【Auto turn on/off and backlight】No riding signal for some minutes, the bike odometer and speedometer will be in stand by mode, the screen will turns off. When you start riding, the bicycle odometer speedometer wireless receives the signal and start to work. At light on mode, the back light will keep on in riding, and when stop riding, the backlight will be off 10 seconds later. At light off mode, the backlight will turn off. 【Better magnet】We provide a plastic cover magnet and an alloy cover magnet for the bicycle odometer, the alloy magnet installation needs a cross screw driver, but is sturdier. Installation of plastic cover magnet is tool free, it also works fine. Same effect to the odometer for bicycle. Depends on how you choose. 【Installation requirements and wheel size measurement】For bicycle computer wireless install, the maximum distance between sensor and magnet is 3mm, closer, better. The suitable distance between bicycle speedometer odometer and sensor is less than 60cm. For the wheel size, set the valve vertically on the surface and mark it, roll forward a full circle, make a other mark for the valve position, the distance between these 2 marks is the wheel size, enter the data to wireless bike computer(mm).