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2000mAh Mini Portable Fan USB Rechargeable Cooler Collapsible Handheld Desktop Fan Quiet Foldable Office Home Handy Power Bank DescriptionReport Item: [Super Long Endurance and Updated Strong Airflow]Adopted the advanced technology, it lasts for 48 hours at speed 1, 24 hours at speed 2, 12 hours at speed 3 after about 1.5 hours full charge. With enlarged blades, the wind increased 30% compared to the original version.The maximum rotating speed of the fan is 3400 rpm which is enough for personal use to keep you cool. [Foldable Design and Mini Size]The folding design makes it easy to be carried and stored. Besides, with the capsule shape, this rechargeable fan can hide the fan blade, small and easy to slide into your pocket and purse.Gifts choice for Christmas & New year. [Power Bank Function and Quiet Operation]5V/1A USB output port makes the mini fan a power bank(2000mAh) in emergency, supplying power for mobile phone, MP3, etc. With no frame design, makes the noise to 20 db which cause no bothering during work.