Power bank universal external on the go battery charger. Offers approximately 3 hours of charging time when Power Bank is fully charged. Compatible with iPhone 4, 4s, 5 and Samsung devices. Compact design easily fits into bag or pocket. Mini USB cord with iPhone 4/4s, iPhone 5, mini USB and Samsung charge adapters included. Output 2000m A/H. Assorted green, black, bue or white color (color is random and chosen at the time of shipping). Sold individually.