13A plug-in sockets with 2 x USB charging ports. 2.1A max output. Sockets can be used while simultaneously charging 2 x USB devices, including tablets, smart phones, cameras, MP3 and MP4 players. Compact and easily portable. 13A plug-in sockets with 2 x USB charging ports. 2.1A max output. Sockets can be used while simultaneously charging 2 x USB devices, including tablets, smart phones, cameras, MP3 and MP4 players. Compact and easily portable.