3 SPEEDS WIND MODES. Low Mode: Very soft and comfortable, help you sleep better at night; Medium Mode: the simulating natural wind, avoid headaches and colds; Strong Mode: constant speed, makes you cooling quickly.USB & BATTERY POWERED. This fan is a USB port rechargeable model. It can also be powered directly by batteries, USB cable can be charged with computers, laptops, power banks and more devices with USB output.SPRAY DESIGN. This usb cooling fan is designed with beauty humidifier, blows the soft and cooling tiny spray. Enjoy your coolness while the tiny spray drenches your skin in moisture at the same time. A perfect companion for you to drive away the heat wave.SUIT TO EVERYPLACE. Indoor desktop fan and outdoor portable fan has a small size(18*10cm/7.09*3.94in). Light-weight and handle design, very convenient to carry with when go hiking and travel.QUIET & QUICKLY COOL DOWN. Strong power ensure maximun air flow, quiet operation with no distraction.