Usb Rechargeable Fan Silent Portable Fan Adjustable Usb Fan The product is shipped based on the color or size of the main image of the product page. USB Rechargeable Fan Silent Portable Fan Adjustable USB Fan For Camping Office Travel Battery Powered And USB|FansProduct properties[One Button Control]: With rotary button and shaker control function. Turn the button to the right to +, turn on the fan and continue turning right to increase the wind. On the other hand, turning the knob to the left to - will reduce the wind until it is turned off. Click the button to enable or disable the movable head function of the fan.2. [Multiple power modes]: There are two ways to power the fans. The first method is to connect the fans to a USB port, such as a laptop, computer, mobile power supply, or any other USB-compatible device. These fans can be kept. The fan is constantly running. In addition, it can be used directly after charging and can be used for about 6 hours or more, which makes it easy to use anywhere in the world.3. [Wide range]: the SmartDevil pivoting fan can be freely adjusted in the direction of 90 -180 , and 120 wide angle automatically to ensure that the air flow can better surround the room and avoid physical discomfort caused by a long time direct blowing.4. [Removable and clean]: the removable guide style grid can be easily removed by simply turning to the left to facilitate dust cleaning. When cleaning is complete, the guide style grid is oriented. Turn right to lock. Keep it clean and keep the fan clean and tidy.SmartDevil Portable USB Silent FanPortable USB Silent Fan has a small body but is powerful. Not only is it quiet,but it also adjusts the wind speed through a 180-degree adjustable knob.User Friendly Adjustable Valve Body[Wide range]: the SmartDevil pivoting fan can be freely adjusted in the direction of 90 -180 , and 120 wide angle automatically to ensure that the air flow can better surround the room and avoid physical discomfort caused by a long time direct blowing.