Travel Adapter World-Wide Universal All-in-one Wall Charger Power Adapter Plug (US,UK,EU,AU) With USB Charger, 4-Piece Set With Case, Black Elegant, safe and easy way to connect your dual voltage portable appliances worldwide. With storage box, travel internationally without worrying about loose pieces. It is convenient for business trip. There's no need to haul around a bag full of adapters when traveling abroad! It can be used with a range of devices, including:MP3 players, digital cameras, mobile phones, GPSs,PDAs,travel speakers,etc. 2 Prong or 3 Prong plug converts to U.S, Europe, Asia, China, Australia, New Zealand, and the UK. The USB charger can be used on electrical systems around the world with a variable input voltage.