Led Republic Corn Bulb, Street and Area Lighting, 54-Watt (250-300 Watt Replacement), Large Screw Base (E39), 5000K (Crystal White Glow, 360&deg; Flood Light, Metal Halide Replacement, UL-Listed 54-watt corn light,Universal application. Replaces any current HPS' or HIDs. Voltage range of 85-325V and 50/60Hz. IP66. Note that ballast must be bypassed when replacing Metal Halides or HPS US & Canada UL Listed, long lifetime of 50,000 hoursinput AC 100-277V,ETL (5003513) ,DLC ; E39 base,fast &easy installation. Up to 80% energy saving compared to standard CFL 360 wide beam angle,Environment friendly, without mercury or any other hazardous substances "Led Republic" is the only authorized one to sell LED Republic products, if you are not purchased from "LED Republic", there will be NO Wanrranty, and please immediately complained to the Amazon, you can get a full refund!!