Specifications: Color:Black;  Noise:~25Db;  CFM:150-180;  Speed:1400rpm;  Noise:~25db;  Blade number:7;  Material:Aluminum alloy;  Initial temperature:50℃-350℃;  Operating temperature range:122℉ / 50℃~662℉ / 350℃;  Product Size: 110mm x 145mm;  Packaging Size: 135 * 110 * 167mm;     Features: 1. This stove fan supplies power by converting the transition into energy without using any batteries or electricity.  2. The working temperature range is approximately: 122℉/50℃~662℉/350℃, the higher the temperature, the faster it starts to rotate.     Note: 1. When using stove fans, the temperature cannot exceed 662℉.  2. Static electricity can be circulated in the room.  3. This stove fan is quiet.  4. Wall-mounted.     Package Included: 1 x Heater Stove Fan;  1 x User Manual    Tips: 1. The hot blast stove fan will not directly increase the temperature, but can only be a tool to accelerate the heat transfer of the chimney.  2. Maintenance-free: Just clean it once and put some light oil on the blade shaft to adjust the rotation smoothly and quietly   3. Do not bring the base of the stovetop. Do not place the stove on a designated protected surface when it is hot.  4. To move or carry the fan, always use the retractable handle when wearing gloves. Please keep your child away when using.