This is a fiber optic dual light microscope illuminator in mint condition. Its top window design is convenient for changing bulbs. Its auto-shut-off mechanism will cut off electricity automatically when the window is open. Each metal-sheathed light cable is 22-inch long and can be bent into various positions. Light source is a 110V unit with solid-state controls. The lamp is 150Watt with fully adjustable intensity. This cool high intensity lighting system is excellent for biological and electronic applications.