Product is fine but the charger is not smart. If you keep the device on the charger, which is super convenient, it will prematurely kill your battery. My toothbrush lasts no more than 5 seconds a month after the warranty expired.

I've just started using my Oi toothbrush but for the price paid, I can't believe it doesn't have a little plastic cap to go over the brush head when on the charger.

The ultimate tool, a must have for each tooth you have ! Do not wait , if you do you will slap yourself when you finally do decide to buy the best oral cleaning tool ever!

Provides very thorough cleaning. My only concern is lack of accessories. The less expensive model, the iO-7 comes with brush head holders, how come the top of the line model, the iO-9 does not?

My problem is the model I have is 3 years old. How do I change the battery> I place it on my charger and it does not hold the charge now. Thought I should change the battery.

When I bought this I didn’t realize that it costs way more just cuz you added one thing in so it ended up costing a lot more than just getting the Oral-B iO series 9 Be careful when you use money on this

I have this since 2 weeks ago and it has made a real impact in my life. I no longer need to put so much pressure on my gums, thinking that I am not cleaning enough... The brush does everything and the app couches you!

[This review was collected as part of a promotion.] This toothbrush has been a godsend when it comes to cleaning between my braces. I've ruined so many other brushes before that never got into the hard to reach places. Definitely would recommend!

I have never felt my teeth so clean even after a cleaning at the dentist. This this is worth every penny. How did I ever live without it. Convincing everyone I know to get one!!

I have been using the iO for a week instead of Sonicare Diamond Clean: the iO has a more refined display, better Bluetooth connectivity, and better cleanings