【Long Working Time】 This fan can run with one or two rechargeable 18650 batteries. One battery can last for 5 to 7 hours and two can last for 8 to 11 hours.
【OPOLAR Biggest Desk Fan】 This 9 inch desk fan is the biggest desk fan among OPOLAR Store, which can be drove with a 5V USB cable or Li-ion battery. Note: This fan cannot be run with regular battery, except 18650 battery.
【Quiet and Easy-operated】 With OPOLAR’s latest dynamic technology, the fan produces a great air and runs very quietly. It will not disturb your work and sleep. Two simple settings make it easy operated.
【Multiple ways of charging】The fan comes with 2 of the best quality lithium-ion 18650 3350mAh batteries. You can also power or charge the fan via USB to use with computers, power banks, or wall adapters, etc.
【Adjustable Head】The sturdy metal frame is able to be adjusted 360 degree up and down so you can choose the wind direction easily according to your preference.