Instruct: Classify Amazon reviews into positive or negative sentiment
Query: very quiet

Very nice product and very quiet. Even on the highest setting it is not very loud. And even then, it is just nice white noice to help sleep. The only negative I have on this product is that the instructions didn't match the product. The On/Off/speed control switch is actually a twist knob on the top rather than a set of push buttons on the side. Not an issue, just an observation.