1.7W High-efficiency Solar Panel For open-air enthusiasts on short and medium-distance trips, our camping fan is undoubtedly a must-have for your summer. It has a portable solar panel and efficient 7W light energy conversion technology with a conversion efficiency of up to 23%. With only 6-8 hours of sunlight, the 10400mAh battery-powered fan can be fully charged, providing green energy and eliminating battery anxiety. 2. Multiple Charging Options Equipped with batteries, fans, Type-C input ports and USB output ports and an efficient 5V2A USB to Type-C cable, charging only takes 5-6 hours. Whether you are at home, in the office or outdoors, you can easily charge the solar fan with a wall charger, computer or car charger. In addition, the solar panel can be used as an emergency charging solution for mobile phones, computers, tablets, flashlights, etc. 3. Sturdy and quiet, this solar camp fan is both sturdy and suitable for indoor use. With 4 optional wind speeds, the 10400mAh large-capacity battery can work continuously for 8-32 hours. In addition, it runs quietly with noise below 30 decibels, ensuring that it will not disturb your sleep or activities. 4. This portable solar camping fan adopts LED camping light and hook design, providing 3 brightness adjustments. It provides the lowest, soft, stray light, while illuminating the entire tent, even the highest tent can remain bright. In addition, it is easy to hang on the tent, the hook design saves space, and the fan can rotate 90°.