SPARX-LED 04-05 LED Surgical Light As an innovator and pioneer in modern shadowless operation light industry, Heal Force incorporates LED (Light Emitting Diode) and Beam Sharper technologies into product development has a comprehensive understanding of operation room, and can therefore offer better LED surgical lights,which are comfort and cost-saving. Luminance (Lux) : 1,30,000 X 2 Colour Temprature (kelvin) : 3500-5500K (variable) Light Field Diameter(cm) : 18~30 cm Focusing Depth(cm) : >=60 Color Rendering Index(Ra) : 97 Working Range (cm) : 55~170 Power Supply : 220V (+-10%) 50Hz or 110V (+-10%) 60Hz Intensity (adjustable) : 10-100%