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Philips Sonicare 9900 DiamondClean Prestige HX9992/31 - Electric Toothbrush

Reviews Philips Sonicare 9900 DiamondClean Prestige HX9992/31

Interested in reviews of Philips Sonicare 9900 DiamondClean Prestige HX9992/31? It got 4.7 out of 5 stars from our customers. Find specific customer reviews of Philips Sonicare 9900 DiamondClean Prestige HX9992/31 below. We will appreciate if you also share your experiences with Philips Sonicare 9900 DiamondClean Prestige HX9992/31 after purchasing.
357.90 €
In stock > 5 pcs
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User Reviews

Michal, Horka nad Moravouflag
Rated 24/01/2024, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/31
Verified purchase
After training perfect beautifully clean, better than a brush.
The app is also great, it shows the cleaning success rate, shows tips etc.
It takes about a week to get the hang of it. In the beginning, the paste is everywhere: -)
Before cleaning, it is necessary to connect to the charger at least briefly so that a new upcoming cleaning is "established" in the app.
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Hana, Brno 37flag
Rated 30/03/2026, variant Philips Sonicare 9900 DiamondClean Prestige Limited Edition Baby Blue HX9997/32
Verified purchase - review from a price comparison website
Perfect cleaning, connection with the app without problems, beautiful design.
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Hana, Brno 37flag
Rated 30/03/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase - review from a price comparison website
Perfect cleaning, connection with the app works without problems, beautiful design.
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Stavební bytové družstvo POKROK, Prahaflag
Rated 01/02/2026, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/11
Verified purchase - review from a price comparison website
Quality product
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Jiří, Prahaflag
Rated 24/11/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase
lighter and smaller than the previous model I had in this series. very easy to use and one-time setup via the app as well.
the charging stand is unstable. The charging cup of the previous series suited me much better and fortunately it is also usable with this model.
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Jindřich, Železný Brodflag
Rated 05/11/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12
Verified purchase - review from a price comparison website
Precision, quality
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Josef, Prahaflag
Rated 02/11/2025, variant Philips Sonicare 9900 DiamondClean Prestige Limited Edition Baby Blue HX9997/32
Verified purchase
Quite a disappointment from a non-superior model. On the positive side, the travel case has a USB-C connector and can store both the device and one head. The downside is that without the app it has only basic functions. The device has no internal memory, so if you don't have your phone with you, cleaning it won't count. It has no sensor other than the pressure sensor, so the brush doesn't know where it is. The stand is made of plastic. The wireless charging puck is removable, but the puck itself is with a USB-A male tip and is fixed in the puck. Just learn not to push yourself and then you can go at your own pace and set your own routine anyway. At full price, it's a useless model, but in action I don't want to go back. Overall an interesting device, but next time I would go for a lower model and buy the travel case separately. Because it's cheaper. Over time, it's more pleasant, more effective and more gentle on the oral cavity.
USB-C charging case
bought on sale
oscillates well and easily
battery life (more than a month)
Travel case
for a top-of-the-line model, it doesn't do much
no internal memory
higher functions from the app only
wireless puck stand is fixed
the puck stand is USB-A male
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Anonymous customerflag
Rated 28/08/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/42
Verified purchase
For me, a very big disappointment. We had toothbrushes almost 7 years old, also Philips Sonicare. I figured I'd pay extra and get "the best". Rather, it's a step (if not several steps) backwards from the "old" ones. The old ones had 3 diodes indicating battery charge. One knew at first glance. Nothing here. One diode. The old ones had mode switching. Nothing here. All through the app. Basic things like modes and battery I would like even without the app. As for the noise level, I wanted to change the brushes because the original ones seemed "already" noisy. Compared to these, they're quiet. The body of the toothbrush does not have a hole at the bottom, so it does not fit into the charging case that we have with the UV sanitiser. Charging case disaster. It opens in the bag when you run or put the bag on the ground. The head can only be there without the cover. Charging is also not indicated in any way. I would have expected a pointer as well. We are trying to give the brushes a chance, but the longer I use them, the more I "miss" the old quality ones. About the only plus is the heads, but they fit the old ones too, so I could have bought the heads and been happy. I don't even comment on the connections and cleaning indicators in the app. That doesn't work as much as it works. I'd like to switch modes, but the toothbrush won't connect.
perhaps the only plus are the heads, but they come separately on the older ones.
They look nice, but that's useless to me considering the cons: )
worse than 6 years old models
noisy compared to the old ones
no charge indicators
a useless case. Opens, no indication of toothbrush charge, head only without cover
switching modes only via the app
the connection doesn't work rather than works
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Tomáš, Tvarožnáflag
Rated 15/07/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12
Verified purchase
Best quality teeth cleaning
Apps and Bluetooth
Rechargeable travel case with usb c and cable
Doesn't look as expensive as the competition
It has no display
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Michaela, Praha 5flag
Rated 06/07/2025, variant Philips Sonicare 9900 DiamondClean Prestige Limited Edition Baby Blue HX9997/32
Verified purchase - review from a price comparison website
I am literally thrilled and immediately bought a second one for my daughter. Your teeth are cleaned in a way they never are with a regular toothbrush, polished, clean, and I have the impression that even tartar comes down over time. Of course, it does not completely clean the spaces between the teeth, but there are other tools for that. About the app, I've read comments that you have to keep looking at the app while cleaning, you don't have to! The app just teaches you how to clean, then you know how to do it and don't need to look at it. The toothbrush vibrates at each tooth segment after 30 sec to alert you to move on to the next one. And then it remembers your cleaning, so you can synchronise it at other times than when you're cleaning. So you don't have to keep looking at your mobile as some reviews say. I recommend him wherever I go, so I recommend him here as well: ) Plus, I love the pale blue pearl color.
Luxury teeth cleaning
Application
It looks beautiful
perhaps only that the modes can not be switched directly on the brush, but must be from the app
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