WYZM 100W LED High Bay Light, 5500K, 12500LM, HPS Equivalent, 110VAbout this item Easy InstallationOnly work at 110V,not suitable for 220V 277V 305V. This package comes with a O ring hook, 3ft power cord,to make installing this light that much easier! Energy SavingsWYZM UFO LED high bay uses a Pure Aluminum Heat sink and Cold Forging technology. Its design is efficient because it helps transfer thermal properties more evenly. The lumen efficiency of this product is up to 120 140 lm per watt. Cut your electric bill