Welcome to our store! This solar panel fan is perfect for providing cooling and ventilation wherever you need it. It can be connected to a solar panel to run or used alone by connecting to a USB port on your computer. When connected to a solar panel, the fan's operating mode depends on the sunlight. As soon as hot air is generated by the sun, the fan immediately starts rotating to dissipate heat and ventilate the area. The solar panel fan is designed to be safe and convenient, eliminating the need for wiring issues. It is especially suitable for outdoor use. The fan's power cable is approximately 70 cm long and there is no rechargeable battery inside. If you need to use it at night, you can add a power bank. Item details: - Item type: Solar panel fan - Material: Polysilicon sheet - Solar panel output interface: USB2.0 - Fan power cable length: Approx. 70 cm - Working voltage: DC 5V - Solar panel size: Approx. 136 x 110 mm Package includes: - 1 x Solar panel - 1 x Fan 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the item, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.