Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Save your money

At first this was a great product. I used it for about 2 weeks and the on-off switch began letting off sparks. Which turned otu for the best. In a pinch I started placing warmed water in a thermos. And it works better, no waiting and always a warm water supply no matter where I am. Like I said save your money and invest in a really good thermos:>