FL500 LED surgical light Details： 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’s 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