Very good
I've used this brush daily for 5 1/2 years and it's as good as new. I've had 2 other Braun rechargeable toothbrushes which were much more expensive. This one is just as effective and powerful. The 2 minute timer is very useful as well. I'd like to comment on some reviewers charging problem. Since the battery is a NiCad so if you remove it from the charger before it's completely charged it can't be charged fully UNLESS you let it run down to nothing and recharge from there. The replacement brushes are expensive so I bought CVS replacements. That was a mistake, I'm back to the Braun made brushes. My dentist comments about how well maintained my teeth are now, in fact he has lengthened the suggested time between checkups.
Rating: 4 stars