????POWERFUL BUT SILENT: With our newly advanced technology, our portable fans are able to generate up to 3200 RPM in the maximum speed setting while still maintaining a relatively quiet decibel, quiet enough to run in a library. ????LONG TIME OPERATION AND USB CONNECTION:4000mAh(2x2000mAh) large capacity batteries provide 5-20 working hours duration (depend on different speeds). Batteries are rechargeable and irreplaceable(for safety). USB charging by a computer, laptop, power bank,USB Charger, cellphone adapter, car charger etc. This hand fan will work on 110 or 220 volts which can be carried to all over the world.? ????MULTI-FUNCTIONAL FAN AND MINI SIZE:It can be desktop fan or handheld fan to satisfy your different needs with cool design, you can put the fan upright or diagonally on the table,also great for office.You can carry it with you easily when you go out for a picnic, shopping, traveling, camping, etc. It is small in size (3.4-inch wide and 6.3-inch long Weight: 6.1 oz) and can easily fit in your pocket, backpack, or beach bag. ????FAST CHARGE AND ONE-KEY OPERATION: Fans gets charged in 3 hours only while other similar fans need 6 hours. The battery of this fan has been designed for the current input of 2A (others 1 A), which makes it get charged faster. Besides, It is easy to use this mini battery fan with only one button. Short press the button to turn on the fan, and press repeatedly to adjust the wind speed or turn off the fan. ????DETACHABLE COVER AND HANG ROPE DESIGN:The cover can be detached easily by rotating lid gently and you can clean the cover blade or even the inner part as you wish. Include a 8.1 inches lanyard, so you don't have to worry about the fan falling accidentally. ONE YEAR WARRANTY IS INCLUDED. High quality, long time duration Powerful engine, 4000mAh upgraded 18650 battery, premium ABS material, all these high quality important components insures the rechargeable fan to last long working. Small size, hand held The portable fan weighs 6.1 OZ, the handle is designed in suitable length and width that is so easy to hold, you can put it into pocket or bag, also connect the lanyard to the fan so that you can hang the fan on your neck. Easy to remove and clean The front cover is easy to disassemble and clean. First aromatic fan It will come 5 lavender aromatic tablets, it brings you lots of fragrant and cool air flow Fast charge It get full charged via 2A/5V charger for 3 hours, which recharges 40% faster than 1A/5V charger. 3 settings Low speed lasts about 20 hours working time, brings you peaceful wind without bother your sleep. Medium speed lasts 12 hours running time, bring you cool wind. High speed lasts 5 hours working time,it puts out a significant amount of wind. Tips before use: 1) Please turn on the Power Button (bottom of the fan), when using or charging the fan. 2) It need to recharge the fan when the white light flashes. Specifications: Material:ABS Battery capacity: 4000mAh(7.2 Wh/3.6V) Charging Time: 3-5 Hours Input: 5V/2A (TYP) Size: 6.2*3.4*1.8inch(Height*Length*Width) What you get: 1*Portable fan 1*Micro USB cable(3.3ft) 2*2000mAh battery(Irreplaceable) 1*User Manual 1* warranty card 5*Lavender tablets Ideal for indoor and outdoor: Indoor: Put the desktop fan on the desk to put out a descent amount of air flow when you play games, read books, do work and so on. Outdoor: It's a lightweight and small fan that is easy to carry it anywhere. It would be a good partner for you, when going outdoors like trips, travel, hiking, camping, etc.