According to the pictures, and the specs at the very bottom, the controller is an iWoc 1. Same exact system as my Pinarello Dyodo. Pedal assist up to 20 MPH at one of four levels, (i.e., no pedal assist, low, medium, and high). At no assist, it rides like a very heavy bike. At the lowest assist, it feels and rides like any high-spec road bike. The medium and high level are where one really feels the assist. There is no torque sensor and power output is not really based on cadence either. The Orbea Gain and Wilier use the same system.