2-speed, DUB, Powermeter, without bottom bracket, black 12-speed compatible, aluminum crank arms, direct mount aluminum chainring set, chainline 45 mm, Bluetooth and ANT+ wireless technology, power measurement on left crank arm, Micro AAA lithium battery, waterproof to IPX7 Number of chainrings 2 Article main color black Large chainring 46 T. Small chainring 33 T. Chainline 45.0 mm Crank length 172.50 mm System compatibility 12-speed Bottom bracket DUB Crankset variation The SRAM Rival Power Meter E1 crankset is SRAM's most advanced aluminum crankset, now with highly 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 thus calculates total wattage. Long battery life (over 400 hours) – enough for a full cycling season User-replaceable AAA lithium battery 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) Allows for sharp and precise shifting Integrated one-piece chainrings for optimal stiffness and performance SRAM Article number: 737917 EAN code: 710845916298 Supplier number: 00.6118.745.016 Retail packaging: Yes