New 2014 Universal Dual USB Battery Charger Mobile Cell Phone Battery Wall Travel Charger Free shipping Mobile Phone Accessories

dual output is 1000mah， can charge your iphone or samsung with your usb cable，  and the third way it charge your external battery of your mobile

if u want cheaper one， pls check this

http://www.dhgate.com/product/universal-intelligent-lcd-indicator-main/166042899.html#s1-2-1|2202248194

• charging.