We've had this a few weeks. I purchased for my wife's bike so she could use it with the indoor trainer. This was one of the cheapest ones I could find that would work for the rear wheel. It also has the cadence monitor. Pretty easy to understand, not too difficult to set-up. It has a back-light on it, so once you press a button it will light up for a few seconds. Probably could have used a couple more zip-ties with it, but I had some. 5 stars