A must-have for dedicated cyclists, the Shimano Dura-Ace FC-R9200-P 12-Speed Crank power meter ensures reliable, waterproof, dual-sided power measurement. Featuring a rechargeable Li-ion battery and Bluetooth LE and ANT+ connectivity, it becomes a user-friendly training companion. This power meter caters to data-driven cyclists, offering integrated waterproof design for all-weather reliability and precise information, including left/right balance. The rechargeable battery provides up to 300+ hours of ride time, and its <1.5% strain gage accuracy, along with proprietary strain gauge and quick start-up, guarantees accurate data collection. Additional features include simple zero offset calibration, active temperature compensation, and the provision of new force vector data for analyzing and enhancing pedal stroke efficiency.