Feature:1. No electricity or batteries are needed, heat energy is converted into electricity, energy‑saving and environmentally friendly.2. The heat powered fireplace fan allows heat to circulate throughout your room.3. High safety coefficient, the heat‑powered fireplace fan will rotate faster as the temperature rises, and slower as the temperature decreases.4. There is a thermoelectric module on the fan, which acts as a small generator to drive the fan motor.5. The stove fan is nearly silent, gives you quiet using experience.Specification:Condition: 100% Brand NewItem Type: Stove FanMaterial: AluminumColor: As shown in the pictureSize: Approx. 21x13.5x12cm / 8.3x5.3x4.7in Blade Radius: Approx. 9cm/3.5inWeight: Approx.780g/27.5ozApplication: Used for fireplaces to promote indoor temperature.Package List:1 x Stove Fan1 x Instruction ManualNotice:1. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.