The Cannondale Hollowgram SI Stages Power is a BB30 compatible upgrade for existing Cannondale 2014 and onwards Hollowgram SI model cranks. Add power to an existing Cannondale Hollowgram SI 3D forged crank by selecting the length of the non-drive power meter to match an existing crank. The Stages Power 2014 Hollowgram SI meter will also mate to the Hollowgram SISL2 model crank.SPECIFICATIONS Accuracy: ± 2% Weight: Only adds 20gr to base crank arm Battery Life: 200+ hours (coin cell: CR2032) Power range (Watts): 0 to 2500 Cadence range (rpm): 20-220 Water resistance rating: IPX7 Device Compatibility: ANT+, Bluetooth Smart Ready Software Compatibiity: Training Peaks, Strava, Garmin Training Center and othersAdditional Features Tool free battery replacement Active temperature compensation Accelerometer based cadence measurement Wireless firmware upgrades
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