Pavel, Kladno 1

Rated 19/12/2021, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12

Verified purchase

Cleans great, much better than a classic toothbrush

Fits great in the hand, holds well

Integrated wireless charger in a travel case

Many settings are only available from the app on the mobile phone, without it we have a toothbrush with one factory mode.

The app requires registration and consent to share data - there is a "no, thank you" button next to the consent, but we can't go any further than that.

High application consumption. To transfer data, the app must be running while cleaning (phone with you in the bathroom), app rating on Google Play 2 stars.

"Vegan leather" on a travel case is just a "progressive" name for leather - a nightmare from the days of socialism. They haven't found worse material?

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Anonymous customer

Rated 31/10/2021, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/12

Verified purchase

my first electric toothbrush and great satisfaction: )

application

Design

Functions

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Hana, Brno 37

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 37

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, Praha

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, Praha

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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Josef, Praha

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 customer

Rated 28/08/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/31

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. look

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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Anonymous customer

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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Lenka, Řečany nad Labem

Rated 12/08/2025, variant Philips Sonicare 9900 DiamondClean Prestige HX9992/31

Verified purchase

The card itself is great. However, since it is sold together with the application (based on the selection of all kinds of cleaning, which cannot be selected on the card), it will go on claim. The app is a disaster! After removing the card from the docking station and switching on cleaning, the application does not start cleaning. After I have cleaned the whole floor it catches on, but it does not save the cleaning record. Even with repeated reloading it is the same error. At the beginning everything worked fine, but after a week of use it's getting worse (it started on one side, then the middle and now it's doing the whole palate... I know my teeth are cleaned, but it bothers me that somewhere in the app I look like a slob who doesn't have cleaned teeth and it's glowing golden.

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Reviews Philips Sonicare 9900 DiamondClean Prestige HX9992/12

User Reviews