The Roseland Stylish Aluminum Slim Power Bank, UL certified high capacity aluminum slim power bank provides a 4000mAh battery for quick and powerful charging. Safe to take on flights so you never have to be without a charge. QuickShip in-hand delivery within 7 business days. FREE 1 side high- res full-color UV imprint using the industry's best decoration technology. Compact design is made of sleek aluminum. Includes a micro USB charging cable and a user's guide. Standard white box OPTION: Free ground shipping from LA. Specifications: UL certified battery. Power output: 5V/1A. Power input: 5V/1A. Capacity: 4000mAh.