The features of two holes halogen cold light source for medical device 1. Working life of the bulb: 50h 2. Small and light 3. Switch power circuit design 4. Stable 5. Applicable with endoscope, microscope and ingeniously constructed testing Product Description Power voltage: AC-110V/220V, 50HZ/60HZ Bulb power: 150W X 2 Product size: 28x12x27cm Net weigth: 6kgs Image plane illuminance: 1600000lx Working life of bulb: 50-200h The quoation is not include th light guiding cable.