Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Short lived product

Judging from many of the one star reviews, I guess I'm lucky. I've had this CD player for about a year. Never used it for walking, just for playing music at bed time. I've always used the adapter. Had problems from the start with it making so much noise that I had to put it under a pillow so I could hear the music. Also had problems with it stopping for no apparent reason. Now it's refuses to work at all using the adapter. I, too, thought Sony would be a great product. Oh well...