DescriptionThis stove fan is powered by transforming heat into energy, without using any battery or electricity. So it is eco-friendly and low energy consumption. It is made from metal, which will not rust or corrode when the fan is getting hot. Can circulate heat throughout the room.Features- Color: Black. - Material: Aluminum alloy. - Size: 19.00x16.50x10.00cm/7.47x6.48x3.93inch. - Operating temperature range: 122 degrees F to 662 degrees F (50 degrees C to 350 degrees C). - Air volume unit: 180-220. - Power: Thermoelectric module. - Voltage: 5V. - Rotating speeds: 1300 (r/mim). - Generate power by converting the heat from your fireplace or wood-burning stove. No electricity needed. - Not so much air volume as electric fan, but enough to blow the hot air to the whole room. - Extremely quiet while working. Say good-bye to the loud noise of electric-forced fans! You won't even know the fan is there, but you'll feel warm all the time. - Made of material, heat-resistant and durable to use. Start automatically when the temperature of the stove surface reaches around 122F. - Just dust it off occasionally, and put some light oil on the blades shaft to keep it smoothly and quietly!