Strong Wind Power: Built-in the first new copper brushless motor, which is more powerful than ordinary motors and has a longer service life. It can support the high-speed operation of the blades and generate strong wind. The front cover features a hydromechanical design to maximize airflow on hot summer days. A desk fan will be your best friend. COMPACT SIZE AND EXQUISITE DESIGN: The 4-inch portable fan is compact and uniquely designed with a modern look, lightweight and space-saving. Great personal fan for the office, home, bedroom, desk, camping, or anywhere you need to stay cool. Adjustable Speed: 3-speed adjustable speed portable fan is enough to meet your various cooling needs. Simply press the power button to change the speed. It's consistently cool at low speeds, just enough to cool you down quickly after a high-speed sweat. Battery Powered & USB Powered: Provide a USB cable compatible with all USB ports, such as computers, power banks, wall chargers and any other USB power sources, you can just plug it in and work day and night. Sturdy Base: The engineered rubber on the bottom of the base helps reduce vibration and increase friction, holding the fan firmly in place and ensuring air flows where it is needed without slipping even at high speeds. You just plug it in and it works day and night. Sturdy Base: The engineered rubber on the bottom of the base helps reduce vibration and increase friction, holding the fan firmly in place and ensuring air flows where it is needed without slipping even at high speeds. You just plug it in and it works day and night. Sturdy Base: The engineered rubber on the bottom of the base helps reduce vibration and increase friction, holding the fan firmly in place and ensuring air flows where it is needed without slipping even at high speeds.