Tacx flux smart trainerthe maintenance free flux smart is a compact and realistic interactive direct drive trainer the swift response of the smart electronics and the 7kg flywheel transmit the slightest fluctuations in resistance directly and accurately to your legs the trainer combines direct drive technology with an electro brake in order to offer an accessible smart and interactive direct drive the flux also has a powerful 1500w motor and a maximum slope range of 10 ant bluetooth compat