Loudspeakers; Smartglasses; Smartwatches; Adapter plugs; Audio-receivers and video-receivers; Audio- and video-receivers; Batteries, electric; Battery chargers; Cabinets for loudspeakers; Cases adapted for mobile phones; Earphones and headphones; Electrical connections; Electrical plugs and sockets; Microphones; Plug adaptors; Plug connectors; Remote control telemetering machines and apparatus; Selfie sticks; Stands adapted for mobile phones; Stands for photographic apparatus; Transmitters of...