The SIStech Swisscharger P3 battery charger is really clever. No matter where you are in the world, the charger automatically adapts to the local voltage and current frequency. This means you can charge your standard AA Mignon and AAA Micro batteries/batteries anywhere in the world without any problems.Attention: The scope of delivery does not include a universal USB power adapter. Any standard USB power supply unit (e.g. that of a mobile phone) or any USB interface (e.g. that of a computer) can be used as a power supply unit.