Luminance:≥35, 000Lux Color temperature range: 3500~5000k Spot diameter:150~300(mm) IIIumination depth:≥800(mm) Light-adjusting mode: Eight grade dimmer system Temperature at surgeon’s head:≤1° Power supply:~220V 50HZ Input power:60VA Bulb of power:3W×19 Color indication index:≥97%