An accurate and reliable bicycle computer can tell you how much further until the next bagel stop. Whatever else you need to know, there’s a bike computer for that - average speed, cadence, altitude, heart rate - even your global position! We’ve relied on the wireless Cateye computer for years and love it, though the quality of the Sigmas and Vettas look first rate; check out the wireless systems to avoid being “wired” to your bicycle wheel. But we’re seriously tempted by the Garmin GPS systems - downloadable data, baby!