Strong AirflowThis desk fan has adopted a built-in professional high-power brushless motor to ensure higher fan speed,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 fan can be rotated 360 degrees vertically to provide the wind in any desired direction to quickly cool you down. Silent Fantable fan is not only powerful, but also quiet, our silent fans for sleeping are almost inaudible at low speed. The working sound of this silent fan is lower than 45db at a high speed, which is unnoticeable and will not disturb your rest or work. The fan is perfect for use while studying, reading, working, sleeping, doing yoga and more. Three Speed Adjustable Low/medium/high speed level. The portable fan with 3 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. USB PoweredComes 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,no longer has to worry about power outages. (Note:This fan does not carry a battery) Quality Materials Desktop USB Fan is made from the finest durable ABS material to provide long-lasting usability. It is designed to perfectly match every occasion. It's a great summer gift for men women families friends on hot days. It's will help you enjoy a cool summer anytime, anywhere.