Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DO NOT BUY

DO NOT BUY THIS PRODUCT. The battery only lasts in these for 18 months, then you can either pay $250 to get it replaced, risk the entire product buy trying yourself, or just buy a new one. I havn't heard of a iPod with a replacable battery, but I did hear they MAY do it. So unless you have $250 to throw away, it's for you. It is a great product, though. Just be aware of the battery.