Review on 🚴 CYCLESPEED Wireless Bike Computer Waterproof Speedometer Odometer, Smart Sensor LCD Backlight Display, Automatic Wake-up, 18 Functions, Extension Bracket; Ideal for MTB Road Cycling by Scott Morris

The first wireless bike computer from this manufacturer did not work because the batteries that came with the device were dead. They were installed without paper protection. I sent it back for a replacement and the second computer had both batteries installed and only one with paper protection. The second battery was installed without paper and died. I bought a new battery for the transmitter and everything works. I have to believe that this provider has no idea about customer support.