MONITOR YOUR PEDALING CADENCE AS YOU RIDE WITH THIS SELF-CALIBRATING, WIRELESS SPEED/CADENCE SENSOR. IT MEASURES AND REPORTS YOUR PEDALING STROKES PER MINUTE, PROVIDING FEEDBACK FOR OPTIMAL PERFORMANCE. THE GSC 10 IS COMPATIBLE WITH THE EDGE 305 AND FORERUNNER 305 ONLY
 "GF - GARMIN GSC 10 SPEED/CADENCE SENSOR EDGE & FORERUNNER 305")
