The Cateye Micro Wireless computer is a great inexpensive wireless cycle computer for anyone that doesn't want to spend big bucks on the really advanced computers. The features are basic, including odometer, speed, trip distance, clock, and a few others. A LED backlight can also be turned on with the push of a button, but the LED only stays lit for a few seconds.
I've used this computer for hundreds of miles so far and it has always worked fine. It's fairly easy to setup and configure; it probably took me around fifteen or twenty minutes to have it perfectly set. The readings are all precise enough for anyone that doesn't need 99.9999% accuracy, which is pretty much everyone but professional cyclists.
This is definitely a great upgrade to a bicycle for anyone looking to track speed, distance, and total mileage.