The ultimate gadget for cyclists: The Polar CS600

In the world of "fun ways to track your status while working out" cyclists have been a little left out when compared to walkers and runners, who can get heart rate monitors and shoes and mp3 players that tell them what's going on -- all while coordinating their efforts to music no less. Well now there's something specially designed for cyclists by cyclists: the CS600 by Polar. Put together with the help of six teams that competed in last year's Tour de France, it monitors not only your heart rate (of course), but also your bike's speed and altitude, which it sends wirelessly to your computer from it's convenient spot on the bike's handlebars.

Sound cool? It must be -- it costs upwards of $700.