Best brush I've ever had! Why have I waited so long to use this type of toothbrush. I'm glad i made the switch and I will buy one for my entire family!

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.

Motion sensor on toothbrush will continuously drain the battery when the toothbrush moves around in case or bag. Any slight movement will turn on display. Must charge DAILY which is very inconvenient for traveler.

This toothbrush truly made my teeth feel like I just left the dentist office. It is a way different experience and gives a different feel from other toothbrushes I have used.

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!

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.

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

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 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!!