LED Lamp, 50W, Bulb: Shoebox/Wall Pack, Base: Medium Screw (E26), Lumens: 5984, Type V Optics, Color Temperature: 5700K, Rated Average Life: Up to 50,000 Hrs. Replaces 150 & 175W MH Lamps. Operates with Pulse Start and Probe Start Magnetic 150w & 175w Metal Halide Ballasts Only.