Power monitor: Integrated OTS (Optical Torque Sensor) power meter Power measurement accuracy: +/- 2% Wireless transmission: ANT+ (Fe-C Power and Speed <(>&<)> Cadence) and Bluetooth (FTMS, Power and Speed <(>&<)> Cadence) max slope: 14% max power: (40 km/h) 1400 Watt-(60 km/h) 2200 Watt Managment via: Smartphone, tablet, ANT+ Fe-C and Bluetooth bike computers Compatible with: My e-Training software <(>&<)> app, Zwift, Trainerroad, Bikevo, Kinomap, The Sufferfest and others Output: Power, speed and cadence Flywheel: 4.2 kg, high RPM Bike compatibility: Road, MTB, City bikes (including carbon ones), with 130-135x5 mm hubs and quick release and 142x12 with thru-axle Sprocket cassette compatibility: Shimano 9/10/11 speed, SRAM <(>&<)> Campagnolo 9/10/11 speed = adapter required Connection: Power supply, ANT+ and Bluetooth (3 LED lights) Includes: 12-month free My e-Training software <(>&<)> app Available on: Smartphone, tablet, bike computers, sport watches, Windows and Mac, ANT+ and/or Bluetooth computers Space occ. when unfolded (lxd): 840x650 mm (33.07x25.59 in) height: 550 mm (21.65 in) Space occupied when folded (lxdxh): 300x650x550 mm (11.81x25.59x21.65 in) weight: 15 kg (33.1 Lbs)