Accurate and InnovativeQuarq’s DZero platform, combines with SRAM’s DUB™ technology brings you one of the most accurate and innovative power meters. The Quarq DZeroDUB power meters are lighter, stiffer, and stronger than ever. AdaptabilityWith a simple selection of the power meter spider that works best with your bike, a crank arm assembly of your choice in length and chainrings to suit, you can now power every ride. • MagicZero™ – automatic calibration as you ride. No need to back pedal or manually calibrate through your headunit • Bluetooth low energy technology and ANT+ wireless data transfer • AxCad – no cadence magnet required • 10K Temperature Compensation • Battery – CR2032, 200-hour battery life, change without tools • Power Balance. • OmniCal – swap chainrings without affecting accuracy • 2-year warranty • IPX7 waterproof rating • Accuracy – within 1.5%, measuring both legs • Free firmware upgrades with the SRAM AXS app Essential Details• Designed for the SRAM Eagle groupsets • Only compatible with XX1 Eagle DUB 8-bolt crankset and a 104BCD X-SYNC 2™ chainring.