[Spare Powerbank] PowerBank Hand Design, so it is not only a cooling fan, but also a useful and comfortable power, you do not need to carry extra cumbersome power and charge your phone outside. . [Long working time]: 5-20 hours of 5200mAh can be equipped with a large capacity rechargeable battery, so you don't have to worry about the power cut and you can use it almost all day. It works with 2000mAh rechargeable battery and can work for 2.5-11 hours after full charge . [3'ü 1-in-1 design]: Adopt the foldable handle design, the fan title can be adjusted between 0 ° -180 °, so that you can be used on the table for cooling or hold for cooling. It comes with a metal clip, it is also a hanging fan, you can also install it in your sunshine, car or car through metal clips, it keeps you cool everywhere . [Strong Air Flow + 3 Speed]: Equipped with brushless engine and double fan wings, can rotate faster than others and produce more powerful wind, and cools you in 2 seconds on hot days. 3 speeds you can choose, be as cool as you want. Traveling, watching sports games, Disney Land and more . [Long durability]: using energy-saving DC brushless engine that can operate continuously for about 20000 hours, you can use about 7-10 years of life for general use, so you can use it for a long time