Portable media players comprised of a hard disk drive-based unit for use in playing movies, video programs, voice recordings, and music; portable media players utilizing data uploaded to hard disk drive-based unit for use in in-flight entertainment; head phones, electrical power supplies and connection cables for use with portable media players

'base':11,35 'cabl':51 'compris':4 'connect':50 'data':28 'disk':8,32 'drive':10,34 'drive-bas':9,33 'electr':46 'entertain':43 'flight':42 'hard':7,31 'head':44 'in-flight':40 'media':2,25,56 'movi':17 'music':23 'phone':45 'play':16 'player':3,26,57 'portabl':1,24,55 'power':47 'program':19 'record':21 'suppli':48 'unit':12,36 'upload':29 'use':14,38,53 'util':27 'video':18 'voic':20

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