1.3 Adjustable Speed Level - This mini fan have 3 speed level(Low/medium/high)can adjust by pressing the power button repeatedly. The sleep mode can avoid headaches, stuffy nose caused by prolonged strong wind and meet the physiological needs of people. And 4pcs fan blades. Brushless motor makes the fan durable.2.Battery Operated & USB Powered - The YIHUNION portable hand held fan operates with Rechargeable battery (can not removable) and can operate for 3-13 hours after a full charge. The small fan is extremely portable as no cable wiring needed which can be used both indoors and outdoors. With a wide range of USB interfaces, you can use the USB charging cable link to computers, power bank , laptops and other devices to enjoy cool wind no matter where you go.3.Removable Stand - With the removable fan stand , You can use it as desk fan in your office or can be used either handheld fan to carry it around to solve the hot stuff on the road. Meet your cool needs throughout the day. Meanwhile, the fan base can also be used as a mobile phone holder for video watching.4.Portable Lightweight Design - This portable fan is only 0.35lb and the dimension is 8.2 * 4.1 * 1.5 * inch. When you go outside, you can put it in the bag and take it to anywhere, especially suitable for summer travel or outdoor sports.NoteIf you do not use this product for a long time, please fully charge the battery and save it to avoid battery damage 5.What In The Package- You get one Portable Rechargeable , one USB cable, one user guide, one fan stand. If you have any problems