Earphones; Megaphones; Microphones; Radios; Audio cassette recorders; Bar code printers; Barcode scanners; Computer cameras; Computer docking stations; Loudspeakers, headphones, microphones and CD players; Multi-function electronic device for use in children's rooms comprising a sound producing function, temperature gauge and also including a clock and nightlight; Musical instrument amplifiers; Smart card readers; USB wireless routers; Wearable activity trackers