Fast & efficient charging for up to 4 USB devices in more than 210 countries. Worldwide USB Charger w/4 USB ports for charging smartphones, tablets & other devices globally.; Integrated US adapter plug w/3 additional clip on heads for the UK, EU & Australia.; 4.8A shared power output which auto-regulates when charging multiple devices.; Automatically detects the device on charge & adjusts power for the quickest charge time..