The impression X4S features 7 RGBW high power LEDs (each 15 watts) and a 7° – 50° zoom optics. The optics, originally from the impression X4 has the same characteristics as a well-defined hard beam in the lower zoom range and in the middle and upper range zoom absolutely homogeneous and soft. All this without disturbing scattered light. Emphasis was placed on the X4S for a compact body and a quick pan / tilt movement.