Review on YS Wireless Waterproof Bicycle Speedometer & Odometer With LCD Display & Multi-Functions - Track Your Ride! by William Mistretta

The bike computer was delivered quickly in new condition in a well-organized package. I only gave 4 stars as the instructions are a bit vague, resulting in two installation errors on my part that may seem common sense once you know. :-) Firstly, battery is required to be installed in both the computer AND the sensor (per the overlooked but vague instruction "And push the sensor cover install the battery in .") Secondly, the sensor should be mounted on the front side of fork with the striped wider side (with strongest magnetic field) facing the spokes. While this is illustrated in the instructions, the second inset illustration makes it look like the short side (that should be facing forward in front of the spoke) is facing the magnet. Otherwise, making the computer setting and installing the system is pretty easy and straightforward. It would be nice to have an on/off switch to save battery life and a back light on/off switch to be able to turn the back light on (rather than the 4 second illumination per button press). Overall, this wireless speedometer and odometer is a good value as it offers a lot of functionality for the money.