Headphones; Loudspeaker boxes; Battery chargers; Portable power supply apparatus (batteries); Megaphones; Microphones; Apparatus for sound transmission; Tachographs; Set-top boxes (digital signal receivers); Electric and electronic effects units for musical instruments; Wearable activity trackers; Computer peripheral devices; Pedometers; Mobile phone cases; Apparatus for network communication; Sound recording carriers; Smart watches; Portable media players; USB flash drives; Audio speakers