250W, Chicken Utility Waterer De-Icer, For Use With All Nipple Style Poultry Drinkers Or Buckets, Thermostatically Controlled To Keep Water From Freezing, 150W Built In Heater Works Automatically, Teflon Coated Element Reduces Corrosion & Build Up Of Calcium & Lime Deposits, Element Sits On The Bottom Of The Bucket, Safe In Plastic, 6' Power Cord, UL Listed.