Luminance(Lux) :120,000 Color temperature(K): 4500K 500K Spot diameter: 130-350mm Illumination depth:1200mm Color rendering index(Ra,%): =95% R9: 90/90 R13: 92/92 Light-adjusting mode : 10 grades dimming system Temperature at surgeon head: =1? Temperature at surgical field: =2? LED service life: =60000h Input power: 8W Voltage/ Frequency:110V/60HZ or 220V/50HZ Arm Turning: 360º rotation Light color: white Lowest height of installation : 2900mm Standard height of installation : 275-310cm