http://www.heartratewatchcompany.com/garmin-forerunner-s/1.htm - Get a FREE Garmin cadence sensor for cycling, a $59 Value, at Heart Rate Watch Company. Just buy a Garmin 610 multi-color GPS watch, any Garmin edge 500 GPS bike computer, a Garmin Edge 800, Garmin Forerunner 910XT or Garmin 310XT. Free shipping, too. Plus get two FREE fitness books a $50 value. That's $109 worth of free stuff but hurry, sales ends December 3rd.