Features Versatile Power Source: Run the fan by connecting it to a solar panel or use it independently by plugging into a USB port, providing flexibility for various power options. Solar-Powered : Dependent on sunlight, the fan's adapts to environmental conditions, ensuring efficient and sustainable performance. Instant Heat Dissipation: Effectively dissipates heat and ventilates in real-time, swiftly addressing hot air generated by the sun, enhancing comfort in outdoor settings. Hassle-Free Outdoor Use: Eliminates the need for wiring, ensuring safety and convenience, making it perfect for outdoor applications. Extended Power Cord: Equipped with a long power cord and no built-in rechargeable battery, making it suitable for continuous use and adaptable for nighttime with an additional power pack. Features: 1、When connected to the solar panel, the fan can run; plug into the USB port of the computer to be used alone. 2、When connected to a solar panel, the working method of the fan depends on the sunlight. 3、When hot air is generated by the sun, the fan immediately rotates and dissipates heat and ventilates in time. 4、The solar panel fan saves wiring troubles, is safe and convenient, and is very suitable for outdoor use. 5、The fan power cord is long enough and there is no rechargeable battery inside, and if you need to use it at night, you can add a power pack. Specification: Item Type: Solar Panel Fan Material: Polysilicon wafer Solar Panel Output Interface: USB2.0 Fan Power Cord Length: Approx. 70cm / 27.6in Working Voltage: DC 5V Solar Panel Size: Approx. 136 x 110mm / 5.4 x 4.3in Package List: 1 x Solar Panel 1 x Fan Note: It can only work in sunlight, if you don't provide power through the USB port. Package List 1 x Solar Panel 1 x Fan