Powerful Ceramic PTC Heating Element. Durable & Rugged Construction. Heavy duty insulated enclosure. High density polymer housing. 120 VOLT 5120 BTU’S. 2 Heat Settings (750W/1500W). Quick Heat , Low Noise. Thermostat Control , maintains constant temperature. Safety Thermal Overheat Shut Off / tip over. Power Indicator Lamp/Caution Light. Comfort Carry Handle.