USB Fan - No batteries required, compatible with computers, laptops, portable chargers and other devices with USB output. Perfect fan for office, home dorm, library, game room, etc. It brings you a nice breeze that cools your summer at a comfortable size. Quiet and Compact - USB powered with On/Off button. Adopting an optimized motor with unique noise reduction, it is a quiet mini fan. 4 rubber cushions at the base can keep the fan in place while working. Slim, lightweight and small, it easily fits into any laptop bag or backpack. Adjustable Angle - 360° adjustable orientation and compact design. Angle to adjust freely from top to bottom, ideal for desk or bedside table. Reliable Quality - Due to low power consumption, almost no heat when running. 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 power: 2.25W Speed