Sram Dzero AXS XX1 Powermeter Spider Bcd 104mm 12V - Black

SRAM Spider Powermeter "XX1 Eagle"
without chain rings, 4-arm, black, 12-/11-speed compatible, 104mm circle diameter.
Only suitable with cranksets with 8-bolt attachment, bluetooth and ANT+ radio technology.
IPX7 water-proof, accuracy: +/-1,5%, both sides measuring.
MagicZero for an automatic calibration, toolfree battery change (CR2032), standard, 49mm chainline.