Sigma BC 1609 Cadence Bicycle Speedometer<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Wired bicycle computer ideal for cyclists in training</li><li>Displays current speed， average speed， and maximum speed</li><li>Countdown timer， stopwatch， and riding time calculator</li><li>Optional cadence measurement; current and total trip distance</li><li>PC-compatible; temperature display; adjustable to 2 wheel sizes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51iANabuqlL.jpg" noproxy>