Covers for headphones; Headphones; Headphones for audio apparatus; Headphones for microphones; Stereo headphones; Stereo headphones for personal entertainment use; Stereophonic apparatus incorporating headphones for personal use; Stereophonic headphones; Two-way plugs for headphones; Apparatus for data communications between computers; Apparatus for data output; Apparatus for data processing; Apparatus for processing data relating to images; Apparatus for processing digital data; Apparatus for processing recorded sound; Apparatus for the transmission of images; Apparatus for the transmission of sound; Apparatus for the transmission of sound or images; Direct broadcasting apparatus for the transmission of data; Direct broadcasting apparatus for the transmission of programmes; Electric apparatus for the transmission of digital signals; Electrical apparatus for the transmission of audio signals; Audio electronic apparatus; Audio processing apparatus for use with video apparatus; Audiovisual devices (apparatus); Audiovisual display apparatus adapted for use with computers; Communications head sets; Sound receiving head sets; Earphones (other than hearing aids for the deaf); Earphones for radios; Earphones for recording apparatus; 3D spectacles; Wireless communication apparatus