Instruct: Classify a given review into positive or negative sentiment.
Query: Rio 800 is a pain in the butt

I got this little guy for Christmas 2002 and I was so excited to have one. Well, after figuring out that you had to calibrate the battery, I thought I was good to go. You wouldn't know to calibrate the battery until you read the directions, which I think is horrible considering most (like me) just plug it in to charge w/o the directions. Well, the battery drains itself and I have never been able to keep it running for more than a few hours. I think the look, feel, sound, and even the amount of memory (mine has 128 mb) are great, but what good is any of that if you cannot keep power to it. The night before I wanted to use it I unplugged it after a full charge... by the time I went to workout the next day, the battery in it was dead. DO NOT BUY RIO -- their product stinks! I will never buy another!