Global Positioning System apparatus; Headphones; Horns for loudspeakers; Loudspeakers; Megaphones; Microphones; Mobile telephones; Portable media players; Smartwatches; Wearable activity trackers; Cabinets for loudspeakers; Battery chargers; Computer peripheral devices; Downloadable mobile applications for playing stored music on loudspeakers and loudspeaker cabinets; Earphones