Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Disappointing Product

My Rio 800 worked great for about two months, but after that short time, I have experienced a number of problems with it. I typically use the unit at the gym, and while it is lightweight and has a more than adequeate storage capacity, the negatives now outweigh the positives for me.The battery life, like many others have said, is poor. I typically get about three hours of playing time out of my unit before it fails. In addition, the player crashes at random, requiring removal and re-insertion of the battery pack before it will operate. On some occassions, this does not fix the crash, with the player displaying "ready to download," and only replacing the firmware fixes the crash. In addition, many MP3s suffer in the transfer process, with annoying screeches and pauses being added.In all, I would recommend not buying this product and saving your money for an iPod.