Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Great product

I got the new toothbrush within a few days of buying. It Works Wonderful, it doesn't have the features of the more expensive models but really you don't need them. Ill have this for years, i know this because my father has an older model from when they were brand new. Its still working but the battery is shot. I already recommended all the people that i care about to get one. Its the really clean feeling you get from this product that makes it great. Also, my teeth have never been whiter!