This is a great product!
After using Sonicare products for the last 10 years, I was looking for something that didn't need to charge via an electrical outlet. My original Sonicare finally died after 10 years!  I haven't had any problems with the product and it works exactly like the other plug in charged products. My battery lasts for several months. When compared to other battery operated toothbrushes, this is by far a more superior product than those for $5-$10 in the store. I highly recommend!
Rating: 5 stars