Batteries; Earphones; Headphones; Loudspeakers; Microphones; Smartphones; Adapter plugs; Audio recorders; Audio speakers; Battery charge devices; Battery chargers; Blank USB flash drives; Cables, electric; Computer keyboards; Computer mouse; Connection cables; Connections, electric; Converters for electric plugs; Data cables; Electrical plugs and sockets; Mobile phones; Movable sockets; Safety contact plugs; Tablet computers