My MP4 is now 4 years old and still working great. The battery lasts about 10 hours when fully charged. The sound and high quality, along with the images. 2 years ago I ran it through both the washer and dryer accidentally and it still works great. It is not too small and not too big so it is easy to carry around. The picture of the movies I watch on it is good but not as good as high quality plasmas'. It is easy to use and accessible. The mic quality is great too, it picks up sound very well and is easy to hear.