Our electronic metal halide ballast is available in 70, 150, 175, 250, 400 and 600 watts. The electronic ballast is enclosed in a heavy duty black aluminum casing. It generates low heat and uses 60% less energy than a traditional ballast. Comes with 12' lamp cord with quick disconnect plug. Includes reef grow bulb(s) and metal halide retrofit kit(s). It has built in cooling fan. Higher wattage double ended metal halide bulbs come with uv shield and tempered glass. Ballast has 9 inch quick disconnect cord that attaches to the 12 foot cord on the retro. Ballast also comes with 60 inch grounded power cord. All electronic ballasts are warrantied for one year.