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X0 eagle axs transmission left arm spindle power meter provides riders with accurate live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what we call “dub-pwr” – a unique design that elegantly houses quarq’s reliable and accurate power measurement inside the dub crank spindle itself. Measuring left-side power to calculate total watts it’s subtle lightweight compatible with any chainring setup and boasts unbeatable battery life. It is also compatible with the flight attendant system allowing for total connectivity between all axs enabled components. No-compromise no-fuss data delivery with robustness in mind. - innovative dub-pwr design allows for lightweight subtle quarq power integration - compatible with flight attendant - unique groundbreaking design integrated with the lightest aluminum crankset on the market - +/- 3% accuracy - long battery life (400+hours) - user replaceable aaa lithium battery - waterproof (ipx7 waterproof to 1 meter for 30 minutes) - right arm bottom bracket chainring and spider not included