USB Fan - No batteries required, compatible with computers, laptops, portable chargers and other devices with USB output. Perfect fan for office, dorm, library, game room, etc. It brings you a good breeze to cool your summer with a comfortable size. Quiet and Compact - USB powered with on/off button. Using an optimized motor with unique noise reduction, it is a quiet mini fan. 4 rubber pads on the base ensure that the fan stays in place while you work. Slim, lightweight and small, it fits easily in any laptop bag or backpack. Adjustable Angle - 360° adjustable rotation and compact design. The angle can be freely adjusted from top to bottom, ideal for desk or nightstand. Reliable Quality - Due to low power consumption, almost no heat is generated during operation. Its high quality ensures a very long service life. SERVICE: If you have any questions about this product, you can contact us by email and we will reply you within 24 hours. Specifications: Input: DC 5V (USB port) Output