Battery1inc World's Slimmest and Smallest 15W Dual USB Wall Charger Travel Ac Adapter Energy Star Level VI Standards (Patent and UL Certificate Version) With 90 degree foldable AC Prong plug in(U.S. Plug),Dimensions 78.9mm*39.9mm*10mm ; Smart IC Technology , Fast Charging iOS iPhone , iPad, Android Smartphones and Tablets etc USB Mobile devices Charge two devices simultaneously:Use your existing USB charging cables to charge most USB powered devices / Easy-to-see LED confirms whether USB charger is properly connected Soft blue LED shows when charger is receiving power, efficiency 82% Input:100-240V 400mA ; Output:DC 5V 3.1A Max. or 15.5W ( Max. 3.1A,up to 2.4A per port)Smart IC technology auto-detects your device's input to charge at maximum speed Sophisticated circuit design with OCP/OVP/SCP over-heated, over-current, over-charging protection. Charging will be automatically stop when battery is full