The fan has no blades, is stylish and safe, easy to use and safer. The delicate wind feels that it will not cause headaches for a long time. Turbo technology produces strong airflow, quiet air ducts, high wind, low noise and low power. The wind speed of the four gears, the gear is and the green indicator light is on; the second gear is cool and blue; the third gear is solid, showing cyan; The fourth gear is Natural Wind, bright colorful lights. The built-in 2500mAh lithium battery can blow 3-4 hours of wind. USB charging, convenient and plug and play, can be used to charge desktop computers, laptops, charging heads, charging treasures, car chargers and other equipment. There are two styles of fans, one is to use the charging cable, the other can be connected to the charging cable, built-in 2500mAh lithium battery. fan blade, suitable for outdoor, dormitory, hotel, library, classroom and many other occasions. Charging: Rated power: 5w Gear position: 4 Power supply mode: charging