With both metal halide and high pressure sodium lamps, Plantmax offers something for any state of growth. Adjusted spectrum ensures the energy your plants need is given to them at the optimum wavelength. Plantmax offers adjusted spectrum in both Metal Halide and High Pressure Sodium grow lamps. Plantmax Metal Halide provides high lumen output and spectrum that help plants grow in vegetative stages. Plantmax High Pressure Sodium with adjusted blue spectrum brings you the best yields in flowing and fruiting. Plantmax grow lamps bring you ultimate yields, even in the middle of winter. Weight: 0.6 lbs. Package Dimensions: 3.5L x 3.5W x 9.3H Max. Wattage: 250 HID Type: Metal Halide Base Type: Mogul (E39) Initial Lumens: 18,000 Color Temp: 7200K Warranty: 1 Year Bulb Orientation: Universal Bulb Shape: ED28 Average Rated Life Hours: 10,000