?Strong Wind? The inbuilt first- new copper made brushless motor is stronger and have longer lifespan than regular motor, which can support the blades run at high speed to produce powerful wind, the front cover have a fluid- mechanical design that can maximize air movement, the OCOOPA desk fan would be your best partner during the hot summer. ?USB Powered? Comes with the usb cable that compatible with all USB port, such as computer, power bank, wall chargers and any other USB-enabled power supply, you can simply plug it into the power supply for the whole day or night working. ?Speed Adjustable?The portable fan with 2 adjustable speed is adequate for your various cooling demand, just press the power button to change the speed, it will always keep you cool at the low speed, the high speed is strong enough to cool you down quickly after heavy sweat. ?Quiet Operation? OCOOPA table fan is not only powerful, but also quiet, you can barely hear it at the low speed, the working sound is lower than 45db at the high speed, which is unnoticeable and will not disturb what you are doing, the mini fan is ideal to sue when studying, reading, working, sleeping, doing yoga, etc. ?Sturdy Base? Designer four rubbers on the bottom of the pedestal help reduce vibration and increase friction, which keep the fan firmly in place to ensure airflow is being directed to the desired location and doesn't slip over when working even at the high speed.