... voltage & frequency:50-60HZ3)100V/220V/230V or 240V (for optional)4)Output rated power:150W continuous,180W max,5 ... continuous power with USB charging port is designed for all major brand notebook computers, iPod, iPhone, mobile phones, PS2, digital devices ... 50Hz or 60HzUSB Output:5VDC 1A cont. It can charge for iPod, iPhoneConverter Efficiency:>90%Protections:Short circuit, overload, over temperature, ...