Review on JGRZF Bike Computer: Wireless Speedometer and Odometer with Backlight, Waterproof LCD Display – Ideal for Outdoor Cycling and Fitness (Wireless Computer) by Brett Cat

The display is sharp but I had to ask my son's friend to install and program it. I'm usually pretty good at this sort of thing, but I need clear direction. Those instructions were terrible. There was no detailed description of what should be included, no description of the parts, or a diagram of which part goes where, etc. Also, there was no troubleshooting or instructions on how to convert metric units to miles, etc. If only it weren't a stop, I would have to pay at least another 25 dollars and take it to a bike shop to have it work.