better than i expected [SEP] after reading the reviews i was afraid of some of the problems mentioned battery life and water in the housing but i cannot afford the higher end version so i bought one for my daughter as recommended by her dentist and one for myself they work well we have had no water leakage problems in several months i have had to recharge the batteries on mine once i use rechargeable and my daughters is still running strong she lives here halftime so it gets less use the brushes are serving their purpose and i am happy with them