Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Buy Sonicare use rechargable batteries work great

We first bought this brush in March 2007. We are now replacing it with the same today Sept 15, 2011 four years later. I have had this brush using rechargable sony or radioshake batteries for the last 4 years. The charge holds for at least two weeks. The brush works great. My wife is a perfectionist and loves this brush. We did have the higher price rechargable sonicare, but they died in two years. Today 4 years later my wife's sonicare did not turn on. I think it is a dead switch. This is a great product. We had minimal problems with leaking. This less costly item works as well as the more costly rechargable sonicare. I like the convenience and cost savings of using rechargable batteries. The brush is good for about a year.