2-speed, DUB, Powermeter, without bottom bracket, black 12-speed compatible, aluminum crank arms, aluminum chainring set for direct mount, chainline 45 mm, Bluetooth and ANT+ wireless technology, power measurement on left crank arm, Lithium Micro AAA battery, waterproof to IPX7 Number of chainrings 2 Type Article Main color black Large chainring 46 T. Small chainring 33 T. Chainline 45.0 mm Crank length 175.00 mm System compatibility 12-speed Bottom bracket DUB Variation Groupset The SRAM Rival Power Meter E1 crankset is SRAM's most advanced aluminum crankset, now equipped with a very accessible power measurement. It provides accurate data integrated into a light, stiff and strong crankset, featuring the advanced X-Range shifting system. This ensures a wide range, smaller steps between gears and a more efficient gear ratio. Power measurement in the spindle measures power on the left side and calculates total wattage Long battery life (over 400 hours) - enough for a full cycling season Replaceable AAA lithium battery user-replaceable DUB bottom bracket for extra durability and easy installation Waterproof (IPX7 - up to 1 meter deep for 30 minutes) Lightweight (less than 40 grams heavier than a standard crankset) Enables crisp and precise shifting Integrated one-piece chainrings for optimal stiffness and performance Sram Article number: 737918 EAN code: 710845916304 Supplier number: 00.6118.745.017 Retail packaging: Yes