Brand - Sony, Model - ICD-PX470, Type - Digital Voice Recorder, Memory - 4GB internal memory, expandable to 32GB with micro SD, USB - Yes, Interface - INPUT AND OUTPUT TERMINALS [PC I/F] Hi-Speed USB [Input] Stereo Mic-in jack [Output] Stereo Earphone jack, Audio Formats - MP3 / WMA / AAC-LC / L-PCM, PC Conectivity - Yes, Battery Type - AAA x2, Head phone Jack - Stereo, Radio Recording - No, Add/Over Write Recording - Yes, Track Mark - Yes, Features - Expandable microSD Slot,USB direct connection for quick file transfer, Calendar Search finds the right file quickly, Low cut filter eliminates unwanted noise , S-microphone system captures distant or quiet sounds, Record and listen in Linear PCM or MP3 formats, Auto Voice Recording reduces background noise, Extra-long battery life for extended recording, Color - Black, Others - 38.3 x 114.1 x 19.3 mm 1.51 x 4.50 x 0.76 inches, WEIGHT -74g 2.7oz, Warranty - 1 year service