Excellent product, much better compared to other brands. A bit expensive, but you get what you pay for.

Don't do it, I'm a dental hygienist and have had several sonicare models over the years, well this is the first one to ever break on me, and the most expensive one I've ever purchased. Of course they'll give me a courtesy replacement if I have a receipt, but who has a receipt from 3 years ago. At this price point it should absolutely last longer than three years. Also the touch button is right where I rest my thumb to brush so it constantly changes my intensity while I'm brushing. Won't be recommending this to my pts

I have been using Philips electric toothbrushes for over 40 years. The Prestige 9900 HX9900 is an amazing upgrade for brushing your teeth, as long as the app syncs correctly. The app works very well when it syncs; I don't know if it's me or the app that is having trouble. Time will tell. The Philips quality is there, and the ergonomics are very good also. Without the app, it gets the brushing job done very well. The brush heads that are offered are excellent. Still learning what to do and how it works. Bottom line, it's better than the one it replaced; I have to learn how to use it.

Any Sonicare I owned systematically failed after 2 years.

Bad experience - less than 1 year spoilt - get a new replacement - the new replacement less than 1 year spoilt again and not able to get any replacement as the warranty based on 1st year warranty - don't see Philips sonic tooth brush giving such sustainable products to be used - shouldn't the warranty should be based on new replacement - gave up arguing with customer care

I really like this product I used it now for one month

It worked very well for 2 years and then it started making funny noises and the toothbruh head was really wobbly. Customer Service have been very difficult to deal with even though I bought the product with them directly as they said it wasn't registered so I'm left with a very expensive toothbrush that doesn't work

I love this toothbrush. I deducted 2 stars for the high price, the durability (my old one broke after 4 years), and lack of repair capability (tried to get the broken one repaired, but Philips said that wasn't possible). With those caveats, I love the way it cleans my teeth. When it's running, I believe it's the best on the market. That's why I keep buying even with the high price.

Love the toothbrush and feature of too much movement and pressure notification. I wish the app was more accurate on re-brushing missed areas

I like the toothbrush since it makes my teeth feel cleaner Everytime I brush. I do wish the app showed individual teeth cleaning and not just a portion of my jaw that's cleaned. This way I can see which teeth I'm not cleaning as well. Other than that, great toothbrush.