Battery chargers; Cabinets for loudspeakers; Cases for smartphones; Cell phones; Covers for smartphones; Earphones; Headphones; Loudspeakers; Music headphones; Rechargeable batteries; Safety helmets; Smart watches; USB cables; Wireless ear buds; Wireless headsets for smartphones; Audio headphones; Covers for tablet computers; Headsets for cellular or mobile phones; Matrix switchers for audio and video signals; Personal headphones for use with sound transmitting systems