Olympus WS-802 Voice Recorder - Factory Refurbished 4GB internal memory; add a MicroSD card for up to 32GB of memory. 1016 hours of recording time. Record and play back in either PCM or MP3 formats for lots of versatility. Starts recording when the device detects a voice and stops when it doesntSaves time and lengthens battery life which is about 27 hours. Skip the non-voice portions of a recording and only play back recorded voices which helps speedup transcriptions. Plug in directly to your PCs USB port with the recorders built-in connector to transfer data and charge the battery. Automatically adjusts voice levels to compensate for distance for sharper and clearer recordings.