Main features: MPEG4 playback, JPEG photo viewer and games; MP3/WMA/WAV/Ogg/Audible, various audio formats can be played (Upgradeable Firmware); all-in-one player (FM tuner/voice recorder/mass storage); 20/30GB HDD (1.8inch); 1.8inch TFT color LCD; USB host: connecting digital devices; G-sensor HDD protection; SRS WOW optimization; rechargeable battery (Li-Ion) / 30 hrs. playback; size: 62 x 99.8 x 16.4 mm