♠️【Built-in battery can last up to 17H】The battery fan has a built-in rechargeable 3350 Capacity battery and even if you don't have an extra socket by your bed, you can also enjoy up to 17H of coolness at its lowest speed with this fan fully charged (the highest speed provides 6H of use). Included USB data cable with 5V 1A output allows charging via computers, chargers, power banks, and more. ♠️【Super Quiet To Accompany You To Sleep】This USB Fan comes with a brushless copper motor. Brushless copper motor much stronger performance than normal motors and runs quietly and steadily without disturbing you in the office or even during a nap. Highest speed of 2500 RPM measures at less than 30 db. ♠️【2 in 1 Stand & Hang】The base of this fan has a hollow design, which is perfect for you to carry or hang anywhere (as long as you have a stand or hook); at the same time, the 160° rotatable design allows you to adjust the fan's angle to meet your various needs. ♠️【15 Variable Speed Designs】Unlike the traditional wind speed adjustment button, this desk fan adjusts the wind speed through a 180° adjustable knob. The wind speed changes smoothly with the rotation of the button. You can choose the most comfortable speed according to your needs. ♠️【Slim and Exquisite Design】The size of this desk fan is: 14.5cm * 17.5cm / 5.7inch * 6.9inch, it is only the size of a photo frame, and the thickness of the fan is only 3cm / 1.2inch after it is folded flat. It is so slim that it can be put directly into your backpack or anywhere in your luggage. It can not only meet the needs of ordinary desk fans on the market for home and office use, but also meet any of your outdoor needs such as: going to cafes and traveling. ♠️【Worry-Free Service】EasyAcc provides a two year hassle-free replacement and refund policy. Please feel free to contact our friendly customer service team; we always aim to reply within 24 hours.