quarq-dzero-powermeter-spider-for-specialized-130mm-bcd-spider-only
quarq-dzero-powermeter-spider-for-specialized-130mm-bcd-spider-only, DZero for Specialized SpiderCompatible with these power meter cranks: Quarq Elsa RS, Quarq Riken Al, Quarq Riken R (produced July 2015 and later), SRAM XX1, 2016 and later SRAM Red power meter cranks (Red eTap graphics)Compatible with these non power meter cranks: Quarq Prime and SRAM Red BB386EVONot compatible with Quarq Elsa R cranksMeasures power for both legs with +/_ 1.5% accuracyDual Bluetooth lowenergy and ANT+ wireless data transferAxCad system provides no-magnet cadence dataFree firmware updates with the QALVIN APPUses a CR2032 battery that can be replaced without tools