Edge ™ 205/305 Owner’s Manual 83APPENDIXReplacing the BatteryThe heart rate monitor andGSC10 (shown) contain a user-replaceable CR2032 battery.NOTE: Dispose of the used batteryproperly.To replace the battery:1. Locate the circular batterycover on the back of the heartrate monitor or the side of theGSC10.2. Use a coin to twist the covercounter-clockwise until itis loose enough to remove(arrow points to unlocked).3. Remove the cover, andreplace the battery positiveside up. Be careful not todamage or lose the o-ringgasket on the cover.4. Use a coin to twist the coverback into place (arrow pointsto locked).batterycoverlocked unlockedarrowGSC10 Battery Installationbattery coverCR2032battery