Amplifiers for musical instruments; Apparatus for recording, transmission and reproduction of sound and images; Computer docking stations; Electric bark control dog collars featuring static electricity; Ethernet switches; Loudspeaker cabinets; Multi-function electronic device for use in children's rooms comprising a sound producing function, temperature gauge and also including a clock and nightlight; Radio-controlled lifebuoys; Smart cameras; Sound projectors; Wireless earphones; Wireless mi...