Super Long Durability and Dual-head FanAdopted the advanced technology, it lasts for 20 hours at speed 1, 15 hours at speed 2, 10 hours at speed 3 after about 2-3 hours full charge. With Dual-head fan,Double motor, Double super wind, the wind increased 100% compared to Single head fan.The maximum rotating speed of the fan is 3800 rpm which is enough for personal use to keep you cool.Foldable Design and PortableThe folding design makes it easy to be carried and stored. Besides, with the capsule shape(4.93 x 1.97 x 1.42 inch, weight: 5.11 OZ), this rechargeable fan can hide the fan blade, small and easy to slide into your pocket and purse.Power Bank Function and Quiet Operation5V/1A USB output port makes the mini fan a power bank( 3000 mAh ) in emergency, supplying power for mobile phone, MP3, or iPod, etc. With no frame design, makes the noise to 40 db which cause no bothering during work.USB Operated Pocket Fan and Touchable BladeThis personal fan can be charged by computer, laptop, portable charger and USB power adapter. With special soft TPE material, the blades are very safe. If you accidentally touch the rotating blades, the soft blades will automatically stop and keep you safe.Multifunctional Fan and Bear Design One Year Warrantycan be used as a desktop fan, or as a handheld fan, the cute bear design can also be used as a decoration and a small desktop storage boxWe believe in our products thus we offer 12 month worry-free warranty, it covers material and workmanship defects for one year from the original purchase date.