VIVOSUN 20" Warming Pet Heated Mat with Free Fleece Cover Safe Low Wattage VIVOSUN Pet Heated Mat is an essential source of warmth for your lovely dogs, kitties or other pets during the cold days. Internal pre-set thermostat: Keep the mat warm and prevent it overheating. ( Recommeded Temperature: 38/100) Free fleece cover: Add a soft coziness to the mat and easy for you to remove off and clean Chew-resistant cord length: 39; Extra long power cord: 71; UL Listed Power Adaptor Specs.: Diameter: 20 inches; Wattage: 20W ( low wattage for safety); Input:100V-120V; Output:12V or 24V