Instruct: Classify Amazon reviews into positive or negative sentiment
Query: OK, but just OK

I am a journalist and use the device for recording interviews. The weakness of this device is the Sony proprietary file format.If they would only record in MP3 format you could download, file and play from your computer. Instead I back up on the computer, erase and if later I want to refer back I have to reinstall onto the device to play. It sucks, what were they thinking.