2020 Upgraded Version: Desk fans with 5 blades will be quieter and more powerful. Made of brushless motor, more quiet and use longer. USB fans can be used 25000 hours or more, so this is a high cost performance small fan.Adjustable Angles and Wind: 3 speed settings allow you to choose the breeze you prefer. Choose the direction of the wind you want with a 360 degree up-and-down adjustment. Super quiet, lower noise, the sound of soft wind mode is only 30 decibels.Rubber Pad on Bottom: Adopt the environmental material with silent operation, widen frame on bottom with 2 anti-slip pad which make this personal fan stable and prevents from vibrations.Portable Size: Mini (4.8 inch frame) size saves space and allows easy hassle free portability. Classic design, concise packaging, in line with the trends.USB Powered: Universal Office Fan, this usb desk fan is powered by a 1.2m USB cable which can connect to a computer, laptop, power bank or other USB outlet to make you cool. Minimum power Input: 1A