Endless Summer Electric Sumatra Heater Table Lamp is a portable outdoor electric heater that keeps you cozy when the temperature begins to dip. This table heater is made of cast aluminum but it has a soft and summery bamboo and wicker look. Its also weather resistant, because what good is an outdoor heater that cant take a bit of weather. Plug this table lamp into a standard 120V grounded outlet and it will begin heating with just the flip of a switch, so you can set it up hours or days before you need it and then just call it into service when youre ready. This one lamp heats an approximate 4 radius. 1 year limited manufacturer warranty.