Earphones; Headphones; Smartwatches; Audio equalizer apparatus; Audio- and video-receivers; Batteries, electric; Battery charge devices; Cabinets for loudspeakers; Chargers for batteries; Chargers for electric batteries; Computer peripheral devices; Connections for electric lines; Electric charging cables; Mobile telephones; Power strips with moveable sockets; Power supplies; Sound recording apparatus; Sound transmitting apparatus; Virtual reality glasses; Wireless speakers