DeLonghi EW6507W Safeheat 1500W Portable Oil-Filled Radiator with Patented Thermal Slots - White Safeheat 1500-watt portable radiator type heater has permanently sealed fins with pure diathermic oil that never needs refilling Heats faster and lowest safer-to touch surface temperature than standard oil-filled radiators due to patented thermal slots Uses up to 36% less wattage than conventional models due to its unique design and advanced technology Silent operation is ideal for bedrooms and TV rooms Automatically turns on when the room temperature drops below 44 degrees F with anti-freeze setting and automatically turns off with safety thermal cut-off if heater becomes too warm