Review on 🚴 CYCLESPEED Bicycle Speedometer Odometer: Waterproof Wireless Bike Computer with 18 Functions - LCD Backlight Display, Smart Sensor, and Multi-Language Support (Black) by Christian Barnes

My complaint is similar to several other reviews of this Cyclespeed bike computer. I bought it at the end of April 21, the instructions are good, there are no problems installing it. It worked fine for 6-7 weeks and then the speedometer started having problems because it was showing the wrong speed, it went from 3mph to 10 to 14 and back to zero while going at the same speed, those too Travel distance was fraction. actual mileage, my two main uses of a bike speedometer. I've also tried everything, moving the sensor and magnet, reinstalling the battery and re-reading the instructions, nothing worked. I advise against buying this product.