[Small In Size,Big On Funct] bined with USB Fan + Battery Operated Fan + Emerncy Charging funct,Otlonpe S-F16B small desk fan would be an everyday-carry-ential fan to cool you off in hot day and is multifunctal to satisfy your diverse needs [5-23 Hours Cooling Time] Up to 23 hours cooling time in one full char with battery mode OR USB mode for no s working. 4000mAh battery powered fan allows you to enjoy it while travelling,sleeping,working and any other indoor or outdoor activities [4 Speed Adjustable Wind] Experience customizable cooling and fort with the 4 speed settings of our recharable fan portable. From a ntle breeze to a powerful gust,each airflow is thoughtfully crafted to cater to your needs [Ultra Quiet Portable Fan] Size: 6.6x5.6x1.5 inches,weight: 9.3 oz,and foldable fan braet making our small fan more easy to carry. Plus,the max noise of quiet table fan l than 35 db,it won't disturb working,studying,sleeping and meeting [Easy to Clean,Emerncy Charging] Have you ever experienced the desk fan is inconvenient to clean or cellpe is out of battery at important moments? If so,then our personal fan is a better choice. With a detachable fan fre and emerncy charging design,it will bring you more convenience.