Quarq DZero 110BCD DUB Power Meter Spider

Quarq DZero 110BCD DUB Power Meter Spider The Quarq DZero 110BCD DUB Power Meter Spider is compatible with SRAM 110 BCD 11-speed chainrings and cranksets. Power is measured to +/-1.5% accuracy; and data is also provided on cadence without the need for a separate magnet. MagicZero technology negates the need for manual calibration; with the system automatically checking and recalibrating for greater accuracy. The CR2032 battery can be replaced without recourse to tools and can last up to 200 hours and even changing chainrings doesn’t have any effect on accuracy. Both Bluetooth low energy technology and ANT+ wireless data transfer are included.