Power every ride. Weve taken the reliability, elegance and features of Quarqs legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. Its invisible technology that adds minimal weight and will help you get to the finish line faster, and can be used to upgrade any eTap AXS bike to power.Key Features:An elegant integrated designDUB-PWR spindle-based unit measures left side power to calculate total wattsProven Quarq reliability and accuracyLong battery life (400+ hours) to power a season of ridesUser replaceable lithium AAA batteryDUB bottom bracket adds durability and simplicityWaterproof (IPX7 waterproof to 1 meter for 30 minutes)Lightweight (less than 40g heavier than standard crankset)Simple and affordable power meter upgrade option (Right Arm/BB/Spider/Chainrings non included)