GlobalSat 11-GB580-004A Cadence Sensor<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Easy To Use </span></li><li><span class="a-list-item"> Uses CR-2032 Batteries </span></li><li><span class="a-list-item"> Durable Polycarbonate </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41OpqcawRoL.jpg" noproxy>