Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's a waste of time to buy such a MP3 player!

I buy the product a month ago, but it can only word normally for about 2 weeks! After that, the MP3 cannot be turned on any more without doing anything bad to it!I rack my head to fix the problem in the last month,such as update the softwares and so on.Oh my god, I found it wasted me lots of time, but is still cannot work now. I really regret to buy such a MP3 Player!