A fan, a battery box, without batteries, four AA batteries are required | Before Dressing, Please Tighten The Outer Ring To Fix The Fan. If The Clothes Cannot Be Fully Inflated, Please Loosen The Ring And Turn The Fan To The Front To Better Inflate The Head At The Same Time. | In addition to the battery box, you can also connect an external power bank | The installation is shown in the figure above. Be careful not to put the battery box in your own pocket, put it into the built-in pocket of inflatable clothing, so as to avoid prolonged use, the battery will heat up and burn you. |