Stereo headphones; Covers for headphones; Ear pads for headphones; Headphones; Stereo headphones for personal entertainment use; Plug adaptors for headphones; Audio speakers; Audio speakers for home; Signal processors for audio speakers; Radio receivers; Speaking tubes; Audio cable; Audio cable connectors; Wireless transmitters; Radio-frequency receivers; Transmitter receivers; Microphones; Speakers (audio equipment); Electronic connectors

Scientific research; Testing of cognitive skills using proprietary methodologies (other than vocational or educational testing); Testing services for the standards, competence or expertise for lawyers, engineers, accountants (other than vocational or educational testing)

Medical apparatus and instruments; ventilated canopy for infection prevention; medical shields; infection prevention apparatus; sterile enclosures for patients; quarantine enclosures for patients; shields and covers for medical examination of infected patients.

Medical apparatus and instruments; ventilated canopy for infection prevention; medical shields; infection prevention apparatus; sterile enclosures for patients; quarantine enclosures for patients; shields and covers for medical examination of infected patients.