USB Charging & Rechargeable Battery: This hand held fan has a built-in rechargeable battery that can be for 3 hours and used for long time. This Blue hand fan has a longer battery life and comes with a charging cable that allows it to be from a regular outlet, a mobile power supply, a computer, or any other device that has a USB port. Powerful Wind & 3 Speed Adjustable: This mini fan handheld fan has three adjustable speeds, and you can change the speed setting by simply pressing the power button. The first speed is soft wind, the second is natural wind, and the third is strong wind. . Great Gifts & Widely Used: The portable fan for travel can be placed in any corner of your home, ideal summer gift , kids, friends. This pocket travel fan is widely used, perfect for use , , traveling, shopping, camping.