Technical parameters : External Power Supply220V 50Hz /110V 60Hz Lamp Power 250W / 350W Color Temperature : 5600K° Illumination : 5800,000LX Fuse : 5A ×2 (tube type 5mm) Safe type : I kind ; BF type Size: 400×330×130 Weight: 10.5kg The adaptor: STORZ or WOLF High intensity, both brightness and flexibility which is a special source equipment for medical apparatus, as well as an equipment matching variety of endoscopes. It is important that the light is as near in color to natural light, so doctors are able to detect very comfortably.Furthermore the light does not heat the tissue.