1.3 SpeedsandStrong Airflow-This small portable fan has a built-in powerful silent motor to provide the strong wind, the speed can reach up to 3600rpm at high speed, allowing you to enjoy the coolness in summer.It has 3 wind speeds: gentle wind, natural wind, and strong wind 2.Foldable design -This hand fan can be turned 180 and used on the desktop to dissipate the sultry heat during working reading studying. In addition, the compact size of this rechargeable fan can easily fit in a bag. Enjoy the cool breeze anytime, anywhere. 3.Backup Power Bank-this USB fan mini has a built-in rechargeable 2000mAh Lithium battery,which can continuously work for around 8 hours after full charged.The handheld personal fan is also a backup power back and can provide emergency energy for your phone,MP3 or iPod, etc. 4.Easy to clean- The front cover of the mini portable fan can be easy to remove. Bring you a dust-free wind. Easily solve summer heat troubles and bring cool air quickly. 5.Quick Charge-You can use wall chargers, laptops, mobile power supplies to charge them. The handheld fan can be fully charged in 2-3 hours.Making this portable fan a perfect gift for family and friends kids, girls,women, men,no matter where they study, travel, office, outdoor sports, etc., they can get cool.