[ Acoustic couplers; Anti-glare glasses; Breathing apparatus for underwater swimming; Electrical adapters; ] Electrical plugs and sockets [ ; Electrical and electronic burglar alarms; Electronic devices used to locate lost objects employing radio frequency; Filters for radio interference suppression; Filters for ultraviolet rays, for photography; Headphones; Loudspeakers; Microphones; Optical lamps; Optical lenses; Radios; Sunglasses ]