Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sonicare Elite 9500

Works the same as the origianl Sonicare. This newer model seems lighter. Also has a charge indicator which lets you know if a recharge will be required soon. The new heads do not address the problem of water and tooth paste running inside the head. This does not affect operation of the unit itself, which is sealed. If it lasts as long as my first Sonicare, I will be very happy.