Maximum power 600 W Maximum simulated gradient 6% Weight 13.6 kg Power accuracy ±5% Connectivity Bluetooth FTMS, ANT+, Zwift protocol Noise level Only 56 dB at 25 km/h (measured at 1.5 m) Hubs compatibility QR 130/135 mm / 12x142 & 12x148 mm thru axle Cassette compatibility Shimano/SRAM 8–11-speed, Shimano 12-speed, SRAM XDR 12-speed* *SRAM 12 SPEED XDR: REQUIRES A CASSETTE HUB THAT IS NOT INCLUDED Shaft compatibility Quick coupling 130–135 x 5mm Device Compatibility iOS, Android, PC (Mac & Windows)