Multi Nation Travel with 2.1A USB Charger AC Power Rating: 6 A max. 100-240 Vac (110 Vac max. 660 Watt, 230 Vac max. 1380 Watt) USB Power Rating: 2.1 A +5 Vdc (10.2 W) Single Plug Safety Feature Built-In child Safety Shutters Patent Protected LED Power Indicator Covers more than 150 countries with US/EU/UK/AU plugs When the adapter is plugged into the wall socket, the ‘power’ indicator should light on that the AC power and USB are in operation. This product may not work with certain high power appliances such as hair dryers. Check your appliance label to see if it requires less than 6 A.