We are offering here the Power Bank SF-169 that is a portable battery charging device that is designed to be used on the go. Think of it as the new and improved version of the rechargeable battery that used to come with an accompanying charging dock. It can be used to charge cell phones, tablets, cameras, portable speakers, gaming consoles, or even laptops. It is used to store electrical energy (deposit it in the bank) and then later use it to charge up a mobile device (withdraw it from the bank). The Power Bank SF-169 is very useful and easy to use.