Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Its great until it quits working!

This thing is sensitive. Ive had it for a couple of months and first I had to order a complete replacement for it because it worked for about 5 minutes then it died and simply WOULD NOT function anymore.Then, the replacement unit worked for 6-7 weeks and it too has died. Ive tried replacing the battery several times and it just won't turn on. Ive wasted my money. If you're going to buy this, I would suggest also buying the replacement warranty because you'll need it!The few weeks of use I got out of it were good though. The recorder worked well in class.