Music Power 0900-72 Encore Dual Port USB AC Charger with Rechargeable Extended Battery Music Power Encore Dual Port USB AC Charger provides 2 power sources in one Powers and charges your MP3 player, iPhone and other mobile devices when you're on the go and even enables 2 devices to be charged at once 500mA output per USB port plus slim design and folding blade provides greater portability Includes rechargeable, extended play battery and 2 USB port charger 2.3-by-1.7-by-8.6-Inch; backed by 1-year limited warranty