Portable Desk Fan, Small Personal USB Desk Fan Strong Wind

【Ultra-Quiet】:Smartdevil usb desk fan uses a silent structure which is engineered to be ultra-quiet while delivering high airflow. Better accompany your work or sleep without disturbing you. 【Three-speed Adjustable】: Low/medium/high speed level. Adjust appropriate usb fans speed by pressing the power button repeatedly. Third gear which can be variable speed design provides you more choices in different temperature environment. 【High Compatibility USB-powered 】:The SmartDevil desk fan is powered by USB and compatible with PC/laptop, power bank, AC adapter, car charger and other USB-enabled power supply.USB fan is energy-saving and environmentally friendly. (Note:This fan does not carry a battery) 【Customer Service】: If you have any questions about the portable usb fan, please feel free to contact our customer service Smartware collection