Earphones; Headphones; Rechargeable electric batteries; Cabinets for loudspeakers; portable media players; Video recorders; Camcorders; blank USB flash drives; chargers for electric batteries; smartwatches; monopods used to take photographs by positioning a smartphone or camera beyond the normal range of the arm; optical and acoustic couplers; covers for smartphones; cases for smartphones; electrical plugs; electrical sockets; and electric contacts