Smartphones; Mobile telephones; Telecommunications apparatus; Cell phones; Audio equipment; Communications apparatus; Display monitors; Laptop computers; Notebook computers; Portable computers; Tablet computers; Apparatus for the recording of sound or images; Apparatus for the reproduction of sound or images; Data processing apparatus; Headsets; Headphones; Communication devices; Mobile phones; Smart rings; Smart watches; Smartglasses; Loudspeakers; Portable speakers; Smart speakers; Wearable speakers