US adapter: *Simple and convenient, it is fast and easy way to charge *At home or away, charging your iPod or iPhone AC US adapter plug*Simple and convenient , it is fast and easy way to charge your iPod or iPhone*At home or away , charging your iPod or iPhone.it;s only a plug way*For use in United States : Input :AC100-240V 50HZ , Output : 5.0V±5% 1A AC US adapter plug