SRAM XX1 Eagle DUB Power Meter Power Meter Crankset Speed: 11/12 Spindle: 28.99mm BCD: 104 32 DUB Black Boost

Bluetooth low energy technology and ANT+ wireless data transfer MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate AxCad -- no cadence magnet required 10K Temperature Compensation Battery -- CR2032, 200-hour battery life, change without tools OmniCal -- swap chainrings without affecting accuracy 2-year warranty IPX7 waterproof rating Accuracy -- within 1.5%, measuring both legs. SRAM Model ID: PM-XX-1-C1