The ultimate feature-packed professional digital voice recorder Over 275 hours digital recording Podcast & Audio Book support Use as a digital voice recorder or MP3WMA player Noise cancellation for clearer results Variable sound control to emphasise the human voice Automatic archiving & syncronisation Large backlit white LCD screen 5 recording qualities STXQXHQHQSPLPVoice activation VCVAVoice guidance menu actually speaks menu options to you Up to 200 messages per folder Up to 26 hours playback or 30 hours recording time from 2x AAA batteries With 1GB of integrated memory the DS-50 offers over 275 hours in LP mode & over 17 hours even in highest-quality STXQ stereo mode. You can leave some of that capacity free for your favourite MP3 or WMA tunes downloaded podcasts or audio books all easily navigable via either voice guidance or the intuitive menu system. The DS-50 is available in a metallic midnight blue. Minimum PC requirements Windows IBM PCAT compatible PC Operating System Microsoft Windows ME2000 Professional XP Professional Home Edition one free USB (Universal Serial Bus) port earphone output or speakers. Macintosh Mac OS 10.2-10.3 must support USB (Universal Serial Bus) storage class Windows Media Player for MAC installation Media Player for MAC installation