General Description This 4-inch mini portable fan is powered by a 5W solar panel, ideal for outdoor or office use. It operates when connected to a solar panel but can also be connected to a computer's USB port. The fan is designed to quickly dissipate heat when the sun is shining, offering a comfortable and safe solution without the need for cumbersome cables. Technical Specifications Solar Panel: Polysilicon Solar Panel Power: 5W Solar Panel Voltage: 6V Panel Size: 14.5 cm x 14.5 cm (5.71 x 5.71 inches) Fan Size: 4 inches Power Supply: USB plug, 5V USB Cable Length: 70 cm (27.56 inches) Material: Metal Color: Black Compatibility and Accessories Included in the package: 1 x Solar Panel 1 x Fan Note: No other products are included in the package. Usage: The fan can be used in two ways: powered by the solar panel during the day or connected to a USB port for continuous operation. There is no rechargeable battery, so for night use, an external power source is required.