This little battery backup will keep your mobile devices charged up. The 2,200 mAh internal battery has enough life to fully charge phone, giving you about 8 hours of additional talk time. The 5V/1A USB output means that it charges at the same rate of most wall chargers. Includes a USB to Micro USB connecting cable which can recharge the battery backup or be used to charge up devices with a Micro USB input like Android Smartphones from Samsung, Motorola, HTC, Nokia, and others. Includes a drawstring pouch for easy transportation and keeping your cables and charger together. Product Dimensions: .75 " x .75 " x 3.75 "Laser Engraved with the United logo.