STRONG AIRFLOW: 3 levels of speed can be adjusted to your demands by tapping the touch switch. High efficiency with brushless motors and low noise. Speed 1 (2900RPM) is comfortable and noiseless, suitable for sleep; Speed 2 (3260RPM) is designed for work and study; Speed 3 (3700RPM) is strong and cool to help you enjoy outdoor leisure in summer.2-in-1 COOLING FAST: Mist Humidification & Strong Airflow creates a super-powerful cooling effect. Just add clean water into the built-in 60ml water tank and long touch the switch to spray mist for better cooling (and long touch to stop mist), lower temperature to about 20 and beat the heat quickly, make you feel more comfortable.UNIQUE GRILLE DESIGN: This mini fan adopts a unique type of Louvred grille cover design, allows meeting a wide range of direction of the airflow. Freely adjust the airflow direction up and down based on your needs.USB DESK FAN: Built-in rechargeable battery, USB cable included, fully charged can last for 4hrs; For stable charging, we suggest charging with some USB devices like PC, Mac or laptop, or adapter output not exceed 5V/1A.COMPACT & PORTABLE FAN: Mini size (12cm x 16cm) and lightweight allow you to enjoy cooling anytime, anywhere. You can place the silent fan on the table when you study, cook, work or sleep, and also easily carry this small fan for outdoor activities and travel. Ideal for home, office, outdoors, game room, etc.