Aluminum, w/black wrinkle enamel base, portable, elec data, 115v, ac, 60 hz, single phase, power demand 65 watts, the base contains a transformer and a resistor, the lamp housing encloses a vacuum flask mantle, lamp window is 1.500 in. By 2.000 in., the sodium arc bulb produces about 650 lumens, complete w/six ft connecting cord and plug