9 Data processing apparatus and data processing equipment and parts therefor namely, computer peripherals; audiovisual apparatus, namely. audio visual receivers; audio apparatus, namely audio receivers; communications equipment, namely, communications computers and communications servers; electroacoustic transducers; noise cancelling headphones; earbuds; earphones for cellular telephones; ear pads for headphones; diving equipment, namely, diving helmets, ear plugs for divers and nose clips for divers and swimmers; in-ear headphones; wireless headphones; wireless headsets for telephones, telephony and computers; headphones; personal headphones for sound transmitting apparatuses; noise cancelling headphones; music headphones; stereo headphones; head sets for use with computers; headsets for mobile telephones; virtual reality headsets; ear plugs for divers; parts and fittings for audio apparatus, namely, peripheral devices for audio apparatus; downloadable and recorded computer software for designing and composing items for 3d printing and for operating and controlling 3d printers; ear monitor headphones; ear pads for earbuds; ear moulds being parts of earbuds; ear adapters for earbuds; ear adapters being parts of earbuds; dynamic headphones; headphones, earphones, in-ear headphones and noise cancelling headphones that can be used by people after otoplasty, not for medical purposes; parts and accessories for electroacoustic converters and headphones, namely ear pads; electric and electronic measuring apparatus, signalling apparatus, checking and supervision apparatus, measurement instruments, signal instruments, control instruments, included in this class, namely, voltmeters, emergency signal transmitters, electric sensors, resistance measuring instruments, signal processors and electrical controllers; electrical acoustic amplifiers and couplers and parts therefor; ear plugs to protect the ear from water and humidity, namely, ear plugs for divers; downloadable computer software for assisting in the design of moulded components; downloadable computer software for assisting in the design of moulds; downloadable computer software for assistance in the construction of three dimensional printers; scanners