Pocket Size of 4 3/8 ” x 2 1/2 ” x 3/8 “, Light Weight only 0.33 lbs. It’s compact size is perfect for every day use. It can be put into pocket easily.2.1A Maximum output for fast charge.With this battery bank, you no longer have to worry about your battery life throughout the day and night! This power bank charges most phones 2 times.Intelligent Control Circuit which protects your devices from over-charging, over-current, over-voltage, short circuit and more, ensures your safe and stable charging. This device is also certificated by FCC, CE, CCC, Rohs.Customize the power bank with your company, organization, or school’s name, logo, and/or slogan. What an ingenious way to show off your logo!