1.Strong Wind & Quiet Design for Battery Powered Fans: This portable fan comes with 4 adjustable wind speeds to meet different needs and keep you cool at home or for travel like camping. The brushless motor and upgraded fan blades operate efficiently with minimum noise, and you will have a calm and peaceful experience thanks to its noise level of ≤ 30Db 2.Super Sturdy Rechargeable Battery: This portable fan rechargeable with an internal high-capacity battery takes only 3-5 hours to be full charged by using the Type-C cable, work time from 10 to 30 hours in different modes, ensuring a cool sleep at night. With the USB-A port, this battery operated fan can be used as an emergency power source for the GPS or phone charging, allowing you to avoid the anxiety of power drawn of the phone during outdoor trips 3. Fan fit for Backpack Size: The overall size of the portable fan is small enough to easily fit into your backpack for easy carrying and storage, without extra burden. The rotatable and foldable hook design of the portable fan at the bottom make it easy to hang on your tent, tree branches or simply placed on desks at home or in the office 4. Fan fit for Backpack Size: The overall size of the portable fan is small enough to easily fit into your backpack for easy carrying and storage, without extra burden. The rotatable and foldable hook design of the portable fan at the bottom make it easy to hang on your tent, tree branches or simply placed on desks at home or in the office