Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great sound, functions and battery life time

I have bought one week ago. They say that the quality of the sound is really good, and it really is.The MP3 player allows easy navigation. There is a recorder that works pretty well. I did an interview this week in a public place. Almost no sound of the environment was captured (just the 2 voices). And the quality was really good. I also liked having a radio when you are tired from your musics.The accessories are nice, but I imagine it is similar for all MP3 players. There is a plastic cover that protects it.I think the 2nd best feature, after the sound quality, is the battery life time: AA instead of AAA.I didn't see some negative points yet. For me works pretty well.