efluky 3 Speeds Mini Desk Fan, Rechargeable Battery Operated Fan with LED Light and 2200mAh Battery, Portable USB Fan Quiet for Home, Office, Travel, Camping, Outdoor, Indoor Fan, 4.9-Inch, BlackAbout this item ADJUSTABLE 3 SPEEDS SETTING : With powerful rechargeable 2200mAh battery, it can work about 3-9 hours according to the speed(soft, natural wind,and strong wind) to meet all your needs. Pres..