World voltage acceptance 100~240VAC with High Power Output 5V 2A (10W).  Four USB power ports charge up to four mobile devices simultaneously through one wall socket. Eliminates the need for multiple wall chargers and outlets. USB ports at the FRONT view for easy plug-in and removal of your USB cables. The four interchangeable AC plugs, US, UK, Euro and Australia, can be used with most common power outlets over the world. AC plugs can be changed easily in seconds by pressing the button at the bottom of the main unit for unlocking the plugs. Designed to charge iPads, iPhones, and iPods at current 1A. This way, you can still use the other USB ports when charging your iPad or you can also charge two iPads at the same time.