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) : Ec:(130000Lx-160000Lx)x2 Colour Temprature (Variable) : 3500-5000K Light Field Diameter (mm) : 20-35 cm Filter : Heat absorbing Color Rendering Index(Ra) : 95+-5 Working Range : 70-130 cm Focusing Range(cm) : 12-28 Power Supply : AC 220-230V/50-60Hz, 110V/60Hz Rated Current : 0.68A+0.68A Rated Power : 150VA+150VA Power of LED Bulb : (1W hight-power LED bulb) x 150pcs x 2 Voltage of LED Bulb : Vt:DC 302V Standard Installation Height*(mm) : 2900-3100 Carrying capacity for OR Ceiling (Kg) : >=500 Standards : EN 60601 , EN 60601-1-2