Optical discs; electronic files for the storage and retrieval of data on optical discs; optical disc reading apparatus; optical disc testers; magnetic discs; blank video magnetic discs; cartridges for magnetic discs; magnetic disc carriers; machine readable recording materials for storing information; magnetic disc recording apparatus; magnetic tape; magnetic tape cartridges; blank magnetic tapes; reading apparatus for magnetic tapes; recording apparatus for use with magnetic tape; spools for magnetic tapes; storage racks for magnetic tapes; magnetic recording media; semi-conductors; electronic chips (semi-conductors) for the manufacture of integrated circuits; semiconductor memories; semiconductor memory apparatus; semiconductor memory devices; solid-state memory devices; optical memory devices; magnetic memory devices; batteries; power packs (batteries); power sources (batteries); battery chargers; battery leads; battery packs; video projectors; card readers; mobile phone covers; phone covers (specifically adapted); cases adapted for mobile phones; cases for smartphones; mobile phone cases; audio speakers; colour monitors; computer monitors; display monitors; monitor screens; monitor speakers; monitors (computer hardware); digital photo frames; hard drives; cases adapted for optical equipment; cases and containers for recorded media (tapes, cassettes and discs); earphones (other than hearing aids for the deaf); earphones for radios; earphones for recording apparatus; headphones; covers for headphones; cables for electronic transmission; cables for optical signal transmission; computer cables; electronic cables; fibre optic cables; telephone cables; optical cables; computer mouses; mouse pads; cleaning guns for computer keyboards; computer keyboards; electronic keyboard apparatus; radio transceivers; battery chargers; mobile phone chargers; telecommunications equipment; electronic image recording apparatus; magnetic disc recording apparatus; recording apparatus