Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Highly Disappointed

We bought this to use with the Coby portable DVD player for a long car trip - Did not work at all. The first time we plugged it in the DVD player would not turn on. We tested the DVD player by plugging it into the wall and it worked fine.We tried the car adapter again and it worked, but for 10 minutes before the DVD player shut off itself. The car adapter also got really hot really quick.We let the car adapter cool off and then tried the DVD player again; it worked for about 5 minutes. I would NOT recommend this product - We bought it because there were so many other positive reviews.