Fast, safe and user-friendly. Keep your room warm and cozy with the Optimus H-6003 Portable Oil Filled Radiator Heater. It’s able to produce 700W heat output to quickly heat up to 150 square feet room, while its permanently sealed diathermic oil enables it to evenly spread warmth throughout your entire room. The included rotary thermostat switch allows you to easily set/adjust the temperature. The built-in overheat protection device ensures safe operation. The ultra-compact and lightweight design, along with the included carry handle, allows you to easily move it from room to room. The heavy-gauge sheet metal cabinet provides rugged durability. It can withstand years after years of heavy-duty use.