Come and see our amazing products. Your tech-savvy clients and crew will love this personalized gift that lets them charge up their phone wherever they are. Features an internal lithium ion battery with 4000 mAh capacity that allows you to charge your Apple or Android cell phone anywhere, even without electricity. In front of the power bank is plastic and the back is stainless steel. Pls confirm with us about the packing info, stock color and exact production time before placing your order.