You can put portable fan in your pocket or bag, also can wear this fan on a lanyard around your neck.Go to work, travel easy to carry.You can put portable fan in your pocket or bag, also can wear this fan on a lanyard around your neck.Go to work, travel easy to carry. The fan is equipped with 3,000mAh battery, can last for 3-14 hours as fan function. And only takes about 2 hours to be full charged. If you need, the usb fan can serve as a high capacity powerbank