New Cross-border Folding Night Light Fan Usb Desktop Household Desktop Fan Portable Fan f54 1. Sen breathes quietly and enjoys coolness as quiet as the natural wind, using a brushless motor, the light sound runs gently and forcefully, and the first wind speed is only about 40 decibels, which is as quiet as whispering in the ear Convenient USB charging, can be connected to power plugs, charging treasures, computers and other equipment, giving you unlimited experience. 2. Instructions for use: press the key to start the machine (1st gear), and after starting the machine, press the wind to increase it by one gear. There are four gears in total, and then click Shut Down. Table lamp mode: press it twice quickly to turn on the long press switch to adjust the brightness. 3. Four-speed wind adjustment can drive away the sultry heat and cool instantly, and the shift position can be changed by the button, which can be controlled by one button, adjusted as needed, and the wind will follow the heart. 4. Circulating air balances the room temperature of the whole house, which accelerates the air flow, and balances the room temperature to avoid local supercooling to improve the refrigeration efficiency, saving electricity and being comfortable.