Comfort Zone Deluxe Oil Filled Radiator Heater has 7 husky heating fins as well as 2 rocker switches to control heat 600 watts: On/Off-900watts: On/Off-1500 watts: both On. Large rolling wheels and a stay cool molded handle makes it easy to move this heater form room to room as needed. The safety features of this heater include a safety tip power cut off switch, safety overheat protection system as well as a convenient cord storage. This heater never needs refilling as it is permanently sealed. ETL approved for sale in the US. Comfort Zone® is driven to perfection producing quality products for everyday living.