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Track your RPMs to optimize pedaling efficiency Integrates with most bike computers, smartwatches, and training apps via Bluetooth Easy to install with a compact design that mounts to your crank arm CR2032 battery lasts up to 12 months (if used for 1 hour each day). IP67 water rating for all-weather protection and durability Ultra-lightweight at 11g Compatible with most bikes, including indoor spin bikes Not compatible with ANT+ devices