6 Pack of EU Europe to US USA Travel Power Plug Adapter Converter Black one European to American (two prong) outlet plug adapter Designed for use with the Wall Charger or VersaCharger PRO When used with the VersaCharger PRO, the power outlet voltage must range between 100 to 220 volts AC Precision engineered for tight fit This adaptor plug modifies electrical outlet, does not change the voltage, supports universal voltage 110V-240V.