Garmin's 010-10997-00 Heart Rate Monitor and Strap wirelessly sends heart rate data to your compatible Garmin device. This monitor is compatible with the following Garmin models: Colorado 300, 400c, 400i, 400t, Edge 305, 705, Forerunner 50, 305, 310XT, 405, 405CX and Oregon 200, 300, 400c, 400i, 400t.