We adopt the innovative design of the feather blades to cut the airflow oblique cyclone structure evenly and densely. Upgraded mini electric fan, strong endurance, strong wind, ultra-quiet, happy travel, whatever you want. Small size, large capacity, enjoy the natural wind anytime, anywhere. Three-speed adjustable wind speed, 1-low-speed weak wind 2- medium-speed strong wind 3- high-speed strong wind 4- stop Charge for one hour, plug in the USB cable, the red light will always be on when charging, and the red light will be off when it is full. Specification: Charging input voltage: 5V Charging input current: 0.5A Output motor voltage: 5V-7.2V Power supply battery: 18650 3.7V/2200mAh Net weight: 122g Dimensions: 106 x 42 x 205mm USB cable length: 15cm