Technical parameters : External Power Supply220V 50Hz /110V 60Hz Lamp Power 250W / 350W Color Temperature : 5600K° Illumination : 5800,000LX Halogen lamp: 150W, 3200k, 1600,000LX Fuse : 5A ×2 (tube type 5mm) Safe type : I kind ; BF type Size: 400×330×130 Weight: 11.8kg The adaptor: STORZ or WOLF On the basis of the single machine, is a new generation products of improved cold light source. The high intensity light source consists of a power supply, cooling fan, brightness controls, and a spare lamp to enable procedures to be finished if the primary lamp fails. It is important that the light is as near in colour to natural light so doctors are able to detect very confortable. It is also important that the light does not heat the tissue.