Description:The fan starts to run when it is plugged into a solar panel, and it can also be powered by other USB devices such as a mobile power supply and a computer.When connected to a solar panel, the operation of the fan depends on sunlight.When the sun is strong, the fan will run quickly. When the sunlight is not strong enough, the fan may run slowly or not work.There is no rechargeable battery inside the fan. If you need the fan to work at night, you can use an external batteryPortable, small size, easy to carry. Battery-free, quiet and green energy, good for the environment Features:5W 4 Inch USB Solar Exhaust Fan Extractor Mini Ventilator Solar Panel Powered Fan for Home Office Outdoor Travel FishingThe fan can run when connected to a solar panel.
