2019 quarq dzero dub spider power meter

Every innovation in Quarq’s dzero platform represents the 10+ years of Quarq’s advances in power meter technology. This same platform is now combined with sram’s innovative dub technology to bring you the simplest spider-based power meter. Simplified part choices, quality materials and a broader compatibility for bottom brackets and chainrings, brings power on every ride.Features:Bluetooth low energy technology and Ant+ wireless data transferMagiczero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrateAxcad -- no cadence magnet required10k temperature compensationBattery -- cr2032, 200-hour battery life, change without toolsOmnical -- swap chainrings without affecting accuracy2-year warrantyIPX7 waterproof ratingAccuracy -- within 1.5%, measuring both legs.