Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A nice-to-have but not worth the money

I purchased this product in November. Its performance/price ratio is not good. Here is why:1) Customer service is horrible. The phone line is always busy. They don't reply emails.2) The AC adapter can only be used as a charger. i.e. you always have to use the battery3) In my case, the battery can only last about three hours. The manual claims "up to 10 hours". Customer service ignored my inquiry.4) When it is recording using the built-in mic, an annoying hard-drive-accessing noise gets recorded every two minutes. In addition, you can not attach a non-powered external mic.5) The FM radio can not give clear sound no matter how hard you tune.What this product is good is it can record voice directly into MP3.I would not recommend the product.