Come and see our amazing products. The Portable Fan has a built-in 3000mAh rechargeable battery. Equipped with a USB charging cable. 3000mah battery capacity not only allows the portable personal fans to last long, but also be used as an emergency power bank. The mini handheld has a USB power output port,can charge phones at critical moments, preventing phones from shutting down in an emergency. With the folding design, you can fold any angle you need on the table as a mini desktop fan. With the included lanyard, it can also as a neck-hanging fan, which can cool you down when your hands are busy. Fine choice for advertisement- allow to print LOGO and advertisement. Pls confirm with us about the packing info, stock color and exact production time before placing your order.