Come and see our amazing products. The LED cap has rechargeable lithium battery power to supply, which can work for 5 hours continuously after 2 - 3 hours of charging.The battery is directly charged by USB, easy to use and practical, and each hat has 5 bright LED lights, which can provide enough brightness to illuminate.It's a great gift for you. Pls confirm with us about the packing info, stock color and exact production time before placing your order.