Bladeless design Motor features: brushless motor (quieter, more energy efficient) Material: ABS environmental protection raw materials Interface type: USB-C Rotation angle: 360 degrees Charging time: 3-4 Hours Battery capacity: 5000mAh Power output: 4.5W Output voltage: DC5V-9V Input voltage: DC5V Wind speed: Adjustable 3 gears, the first gear is moderate wind, the second gear is natural wind, and the third gear is strong wind.