High Quality 4 Inch Cooling Ventilation Fan USB Solar Panel Iron Fan, Suitable for Home Office Outdoor Travel Fishing | The fan operates when connected to the solar panel; it can also plug into a computer USB port for stand-alone use. When the solar panel is in use, the fan's performance is dependent on sunlight. Under strong sunlight, the fan runs very quickly. If the sunlight is not sufficient, the fan may run slowly or stop. Please note that the fan does not feature a rechargeable battery; For night use, a power bank can be utilized. Solar panel power: 3W, 6V Panel size: 14.5cm x 14.5cm Application: Charger for power banks, MP3 players, and electronic devices. Features: Waterproof Mini Fan Size: 4 Inch Material: Iron Power Supply: USB Plug 5v USB Cable Length: 120cm Color: Black Package Contents: 1 x Solar Panel Iron Fan Only the above package contents, excluding other products. Note: Different lighting and monitors may cause the color of the item in the picture to be slightly different from the actual item. Measurement tolerance is +/- 1-3 cm.