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.

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

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 bought an iOS 7 toothbrush about 7 months ago. It has already stopped working. Poor quality?? I’m not sure, but I do know that I spent a lot of money for something that did not last.

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.

Never in my life did I think a toothbrush would be a game changer. This thing is the ultimate clean, I’m not sure how I made it 32 years without it. I’ve had it for a month now, hopefully it holds up, because the price tag is large.

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.

I like the toothbrush as a whole but mine gets covered in toothpaste even when I rinse the brush head off when charging it. The charger gets covered in toothpaste residue too and it’s very hard to get off.

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 bought this to replace a competitor's model, and it seems to do a much better job of cleaning teeth and removing plaque. On the downside the app gets confused as to where I am brushing. I see no evidence it monitors 16 zones. More like 6.