The SRAM XX SL Eagle AXS Transmission Powermeter cranks have an integrated power meter to capture and deliver live, accurate power readings to your head unit. With an all-new spider-based design, this is the most accurate and high-performing power meter. The new spider design uses a proprietary chainring mounting system that allowed us to reduce weight without sacrificing reliability. A dual-sided power measurement system calculates total wattage; it is subtle, lightweight, and has unsurpassed battery life. It is also compatible with the Flight Attendant system, allowing total connectivity between all AXS-enabled components. No compromise, high-performance data delivery that gives you an edge over the competition. An all-new design with Thread Mount chainrings. Up to 1.5% accurate power calculation. Battery lasts up to 200 hours, and is easy to replace. Carbon crank arms making this the lightest power meter of its kind. Waterproof IPX7 (up to 1m deep, 30min long).