The shaving foils perfectly adapt to the contours of the face for all three models. The shaving head is freely movable for maximum skin contact. Additionally, the shaving heads perfectly conform to the facial contours thanks to ConstantContour technology. The innovative ControlCut technology features a micro-comb and the Hybrid-Intercept trimmer that comb and cut longer and deeper hairs. The F4 is also equipped with a 3-day beard styler, allowing for a variety of looks.