D-SYANA8 Handheld USB Fans, Large Airflow 5 Blades ...
Specifications: The heat powered fireplace fan uses thermoelectric technology to convert heat into electrical energy, and there is a unique thermoelectric module in the center of the fan. When heated, the module produces electricity to operate the fan. So the fan does not need battery. Circulates warm air throughout the room, self-powered by heat, adjust
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