I love my Cateye CC-MC100W Micro Wireless 10-Function Bicycle Computer. If you do any biking at all, it’s well worth the 50 bucks!
I need to comment on the installation of the bike computer. The Amazon reviews on the actual product are almost unanimously excellent, but some people really railed on the installation instructions, complaining that they were all but impossible to follow. In fact, some of the installation instruction comments were so negative that I almost didn’t order this model. Turns out I had nothing to worry about. I don’t know if the people complaining just didn’t take a few minutes to study the installation/part diagrams or what, but that’s all it took to make everything very clear. I had the unit installed and working perfectly in less than 15 minutes. The installation was actually very easy, and required no tools. Could the instructions use some improvement? Absolutely. Are they difficult to follow? Not if you’re willing to invest a couple minutes making sure you understand everything before you start.
Anyway, the computer can be mounted on the stem or the handlebars (I choose the stem-mounted option), and the remote wireless sensor is installed on the fork. The setup of the computer is very easy: you simply enter your choice of MPH or KPH, the current time and your bike’s wheel diameter in mm.
Complete list of functions and features: Current speed, maximum speed, trip distance 1 & 2, average speed 1 & 2, elapsed time 1 & 2, clock, wireless, backlight, menu screen, pace arrow, convertible speed unit, manual odometer set, dual tire sizes, sleep mode, stem or handlebar mount, auto or manual start/stop, universal bracket/sensor mounts, auto power saving.