The Conair Travelsmart Worldwide Adapter 4 in 1 Plug Set with USB Port and Case is a versatile travel accessory designed for international use. With its ability to work in over 150 countries, this adapter is ideal for travelers going to various regions worldwide. The addition of a USB port allows for convenient charging of electronic devices while on the go. This compact set comes with a handy case for easy storage and portability, making it a practical and essential item for globetrotters needing to power their devices in different countries.