TWIST WORLD ADAPTER COVERING THE US/UK/AUS/EURO/ASIA. INPUT: AC 100V-240V 50/60HZ. OUTPUT: AC 100V 3A/240V 3A. OUTPUT: USB 5V 3.4A PLASTIC EXTERIOR.1 UNIVERSAL AC IN PORT. 1 UNIVERSAL AC OUT PORT. 2 REGULAR USB OUT PORTS. THIS IS A UNIVERSAL TRAVEL ADAPTER PROVIDING EASY CONVERSION FROM ONE COUNTRIES AC PLUG TO THE NEXT IN THE EASE OF A PRESS OF A BUTTON AND TWIST OF THE CENTER OF THE ADAPTER?S BODY. THIS ADAPTER PROVIDES BOTH AN AC PORT AND 2 USB CHARGING PORTS ENABLING YOU TO CHARGE MULTIPLE. 2 1/2" DIAMETER X 3 3/8" W X 1" H