Come and see our amazing products! This 4000mAh power bank is made of aluminum alloy, supports super fast charging for almost any type of smart devices. Input: 5V/2.1A, Output: 5V/2.1A. Portable and thinner than most power banks, it allows you to charge any phone or tablet at full speed so your devices never run out of power. This is perfect for handing out to those who like to keep their devices charged up while they're out and about. Add your logo or message to create a great branded promotion that your customers and supporters are sure to love. Price includes shipping cost to CA. Quantity over 3000 bases on ocean shipping way. Pls confirm further with us if any query about packing info, inventory status and time schedule.