[ Audio-video receivers; Batteries, electric; Battery chargers; Cabinets for loudspeakers; Camera hardware systems for IP (Internet protocol) video surveillance; Digital video recorders; ] Earphones and headphones [ ; Electric navigational instruments; IP (Internet protocol) cameras; IP (Internet protocol) speed dome cameras; Laptop computers; Monopods for handheld digital electronic devices, namely, cell phones; Network routers; Portable media players; Power adapters; Protective covers and c...