Dual USB car charger for iphone 4/4s 1.with Apple USB cable 2.adapt to:iPad, iPhone 4, iPhone 3G,3GS, iPod,Blackberry, etc. Dual USB car charger for iphone 4/4sSpecificationSecurity: with over current ... : USB 1: 2.1A / 5V, USB 2: 1.0A / 5V with Apple USB cableadapt to: iPad, iPhone 4, iPhone 3G/3GS, iPod,Blackberry, etc. Dual USB car charger for iphone 4/4s