---
product_id: 315135894
title: "DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels, Charging Travel Case, Champagne, HX9990/11"
brand: "philips sonicare"
price: "17387817₫"
currency: VND
in_stock: true
reviews_count: 9
category: "Philips Sonicare"
url: https://www.desertcart.vn/products/315135894-diamondclean-9900-prestige-electric-toothbrush-with-senseiq-technology-and-advanced
store_origin: VN
region: Vietnam
---

# 62,000 bristle movements/min SenseIQ + AI app for smart brushing 14-day battery life with travel case DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels, Charging Travel Case, Champagne, HX9990/11

**Brand:** philips sonicare
**Price:** 17387817₫
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your smile game with AI-powered precision! 🦷

## Quick Answers

- **What is this?** DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels, Charging Travel Case, Champagne, HX9990/11 by philips sonicare
- **How much does it cost?** 17387817₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/315135894-diamondclean-9900-prestige-electric-toothbrush-with-senseiq-technology-and-advanced)

## Best For

- philips sonicare enthusiasts

## Why This Product

- Trusted philips sonicare brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Travel-Ready Power:** Up to 14 days of use on a single charge plus a sleek charging travel case keeps your routine flawless anywhere.
- • **Smart Pressure Sense:** SenseIQ tech adjusts intensity 100x/sec to protect gums from overbrushing—your personal dental coach.
- • **Stay On Track with AI:** Integrated app offers real-time guidance, personalized tips, and brush head replacement reminders—never miss a beat.
- • **Plaque? Gone 20x Faster:** A3 Premium brush head removes 20x more plaque than manual brushes for a visibly cleaner smile.
- • **Tailored Brushing Modes:** Choose from 5 modes & 3 intensities for a custom clean that fits your lifestyle and oral needs.

## Overview

The Philips Sonicare DiamondClean 9900 Prestige is a premium electric toothbrush featuring SenseIQ technology that senses pressure, motion, and coverage 100 times per second to optimize brushing. It delivers up to 62,000 sonic movements per minute with a multi-angle A3 Premium brush head that removes 20x more plaque and improves gum health by 15x in six weeks. With 5 brushing modes, 3 intensity levels, a smart AI app for personalized coaching, and a 14-day battery life supported by a charging travel case, it’s designed for professionals who demand a high-tech, effective, and convenient oral care routine.

## Description

Experience the most advanced sonic toothbrush in the range: Philips Sonicare Prestige 9900 with SenseIQ technology. Paired with the A3 Premium All-in-One brush head that features multi-angle bristles, it removes up to 20x more plaque than a manual toothbrush. It also helps achieve 15x healthier gums in six weeks² and up to 100% more stain removal in less than two days³. SenseIQ Technology senses your pressure, motion, and coverage up to 100 times per second. If you apply too much pressure, the toothbrush will automatically adjust the intensity level to protect your teeth and gums. This Philips Sonicare toothbrush cleans gently yet effectively and cares for your teeth and gums with up to 62,000 bristle movements per minute. Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline. A light ring gently lets you know if you're overdoing the pressure. Enhance your oral care routine with 15 brushing settings. Select from five modes - Clean, White, Gum Health, Deep Clean+ and Sensitive - and adjust to one of three intensity levels for a customized clean. Achieve your oral health care goals with the Sonicare toothbrush and app. Benefit from guided brushing, tips and tricks, and content personalized to you. Together, you are unstoppable. Did you know that brush heads become less effective after three months? The replacement reminder tracks how often and how hard you brush, then reminds you to replace your brush head once it's time for a new one. Every detail of this Philips toothbrush is crafted with attention to detail by dedicated designers and engineers. Plus, with the included charging travel case, you can maintain your oral care routine, even while on the go. Experience up to 14 days of regular brushing on a full charge, bringing a new level of convenience to your daily routine. ¹ vs. a manual toothbrush ² vs. a manual toothbrush in 6 weeks ³ in lab test vs. a manual toothbrush ⁴ except for Philips One

Review: The BEST cordless toothbrush on the market. Period. - I've tried many brands of electric toothbrush and this model works the best. I tend to push too hard on the brush when brushing. Most brushes will briefly stop and wait to continue brushing which is super irritating. This model has a stronger motor and powers through brushing with a slightly stronger push which is wonderful. My teeth are clean and my gums feel great. I have used the model below and above this one. The model above this one is their top tier model and only works with a phone app which is very irritating for a device you use every day. The model below this one doesn't have as strong a motor and pauses out frequently for me.
Review: By Far My Favorite Toothbrush! - I'm just going to start off by saying this is my favorite toothbrush that I have owned so far, even if it is very pricey! Prior to this toothbrush, I have been alternating between an Oral-B electric toothbrush with a round head and a traditional toothbrush. The toothbrush arrives well packaged and is very easy to setup. I do use the app (iOS) while brushing my teeth. The build quality is top notch, it doesn't feel cheap. This should be expected being how expensive this toothbrush can go for. One of the reasons I chose this toothbrush over the lower models is due to its design and not having a physical button where grime can build up. The fewer crevices there are, the easier it is to keep the toothbrush clean and functioning properly. The charging puck is nice and works well. If I had any suggestions of improvement, it would be that the plastic piece that sits on top of the charger snap in place instead of just resting on top. It's so lightweight that and doesn't secure itself, that any attempt to move the charger or a bump to it can knock the plastic mount off of the charging puck. Other than that, the toothbrush sits securely and I haven't had an incident yet that could knock the toothbrush off. When brushing my teeth, I use the app and set the tooth brush to it's deep clean mode for a longer brush time. I can honestly say I don't recall my teeth ever feeling this clean from brushing at home. The closest experience I can compare it to is after having my teeth cleaned at the dentist. My whole mouth feels cleaner, my teeth feel smooth and polished, morning breath has been greatly reduced, and I have even noticed my teeth looking noticeably whiter as this toothbrush does an excellent job at removing stains (I don't smoke, but I do drink coffee and sodas). I was starting to notice this within the first 2 weeks of using the toothbrush and after about 1.5 months of use I still have the extra clean feeling after every brush and more stains have been removed from my teeth. The toothbrush is very easy to keep clean, especially with fewer crevices for grime to get caught up in. I also find that this toothbrush is less messy when being used, less drippage and such. My previous toothbrush, an Oral-B was horrendous for this. It had lots of crevices for grime to get into and the design of the brush heads allows toothpaste and saliva to drip down the handle. No such problem with this toothbrush. When I first got the toothbrush, one of my initial complaints was that it didn't allow me to capture my brushing data into Apple Health. But a few weeks ago Philips released an update to their app that does allow some data to be recorded into Apple Health, so that is a good start. Another complaint that I have which is related to the app (and how the toothbrush interprets input) is I sometimes run into problems with the toothbrush and app properly capturing the position and placement of my toothbrush. Even though I may be brushing in the area it wants me to, sometimes it has a hard time recognizing if I am brushing on the outside or the inside. When this happens, it may not flag enough time being brushed in that area and want me to brush for an additional amount of time to touch up those areas. And it isn't always the same area. This may be due to a calibration problem and it would nice if there was an easy way to quickly recalibrate the toothbrush so that it can better identify its position. On a side note, if you plan to use the app to track your brushing habits, I recommend getting something to mount your phone to your mirror. It will make using the app while brushing a lot easier. I do like how the app and toothbrush track the life of your brush head and recommends when it is time to replace it. Typical recommendation to replace a brush head is ever 3 months. I am currently two weeks away from 2 months of use and based on my current usage, it looks like I will be prompted to replace my brush head in about 2 weeks. So why am I getting about 2 months use out of my brush head instead of three? If I had to guess, it may be due to me doing the Deep Clean option which runs for 50% longer than a typical brushing session, 3 minutes vs 2 minutes. As such, the app and toothbrush may not be calculating my brush head use by number of sessions (like it displays it as) but really by how much time the brush head is used for. TL;DR The toothbrush is phenomenal but pricey. If you don't mind spending the money, or find it on sale, you won't be disappointed in the performance of the toothbrush. It does an excellent job at cleaning your teeth and removing stains. The app is decent, but there is always room for improvement. But seeing that improvements have already been made in the short time I have been using the toothbrush, I am hopeful that the app will continue to get better in the coming months. Adding an easy to use recalibrate option for its positioning awareness, I think, will be extremely helpful. I would also like to see more data being captured in Apple Health instead of just brush duration. The app captures a lot more data points that I would like be viewed in Apple Health as well. Not sure if this is a limitation with Apple Health or the app.

## Features

- The A3 Premium All-in-One brush head removes up to 20x more plaque than a manual toothbrush; achieve 15x healthier gums in six weeks², and up to 100% more stain removal in less than two days³
- SenseIQ Technology senses your pressure, motion, and coverage up to 100 times per second; if you apply too much pressure, the toothbrush will adjust the intensity level to protect your teeth and gums
- Gentle yet effective clean, with up to 62,000 bristle movements per minute; Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline
- This electric toothbrush for adults has a light ring at its base that gently lets you know if you're overdoing the pressure; simply ease off when it lights up to help your gums stay protected
- 15 brushing settings: select from 5 modes - Clean, White, Gum Health, Deep Clean+ and Sensitive - as well as from one of 3 intensity levels for a personalized clean; select your preferences in the app
- Achieve your oral health care goals with the Sonicare toothbrush and app: the two pair seamlessly to deliver guided brushing, tips and tricks, as well as content personalized to you
- The brush head replacement reminder tracks how often and how hard you brush, then reminds you to replace your brush head once it's time; dental professionals recommend changing your brush head regularly
- Rechargeable toothbrush providing up to 14 days of regular brushing on a full charge; with the included charging travel case, you can maintain your oral care routine, even while on the go
- The set includes: 1x Prestige 9900 sonic electric toothbrush, 1x A3 Premium All-in-One brush head, 1x charging travel case, 1x charging stand, 1x USB cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B08YCZNSLL |
| Batteries  | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #17,451 in Health & Household ( See Top 100 in Health & Household ) #40 in Sonic Toothbrushes |
| Customer Reviews | 3.9 3.9 out of 5 stars (2,128) |
| Date First Available  | March 11, 2021 |
| Item model number  | HX9990/11 |
| Manufacturer  | Philips Sonicare |
| Product Dimensions  | 2.91 x 6.61 x 6.61 inches; 14.29 ounces |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Philips Sonicare
- **Item Firmness Description:** Soft
- **Power Source:** Battery Powered
- **Special Feature:** Bluetooth Connectivity, Compact, Rechargeable, Travel Size

## Images

![DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels, Charging Travel Case, Champagne, HX9990/11 - Image 1](https://m.media-amazon.com/images/I/71YPzq6t9-L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: All the reviews are from amazon vine voice.  how can these be unbiased reviews?  especially for something so expensive.**
A: I am a Vine Voice reviewer and I still only gave it 3 stars.  As a toothbrush it is great, and the carrying case is nice.  But is it $200 BETTER than the model just below it? No, it is purely a "I am rich and want a rich person's toothbrush".

Also, Vine Voices still have to pay taxes on the product received.  In taxes this cost as much as the second best model, so Vine Voice folks are not going to get this and give it a highly rated review if they don't like it... at least I wouldn't.

**Q: Does Sonicare make a “compact size” replacement head for this toothbrush!**
A: Hello! Yes, you may use the Philips Sonicare DiamondClean Compact Brush Heads HX6074/26 for the Philips Sonicare 9900 Prestige toothbrush.

**Q: How does this compare to the model 9700, what are the main differences?**
A: Hello! The Philips Sonicare 9900 Prestige toothbrush is our most advanced electric toothbrush always gets you, sensing your brushing style and adapting to you as you clean with the Premium All-in-One brush head. Unlike the Philips Sonicare DiamondClean Smart series, the Prestige comes with Premium All-in-One brush head that is our all-time best and the only thing you need to achieve cleaner, whiter teeth and healthier gums. It comes with 1 button that has no visible gaps and it joins between the button and handle.

**Q: Can a brush charging with a previous version charger (9300 Glass charger)?. Is it compatible?**
A: Yup!! I bought the 9900 for my girlfriend, the one with the glass charger for me (9750?). Her 9900 charges beautifully in my glass charger.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The BEST cordless toothbrush on the market. Period.
*by C***E on January 25, 2026*

I've tried many brands of electric toothbrush and this model works the best. I tend to push too hard on the brush when brushing. Most brushes will briefly stop and wait to continue brushing which is super irritating. This model has a stronger motor and powers through brushing with a slightly stronger push which is wonderful. My teeth are clean and my gums feel great. I have used the model below and above this one. The model above this one is their top tier model and only works with a phone app which is very irritating for a device you use every day. The model below this one doesn't have as strong a motor and pauses out frequently for me.

### ⭐⭐⭐⭐⭐ By Far My Favorite Toothbrush!
*by V***E on December 30, 2021*

I'm just going to start off by saying this is my favorite toothbrush that I have owned so far, even if it is very pricey! Prior to this toothbrush, I have been alternating between an Oral-B electric toothbrush with a round head and a traditional toothbrush. The toothbrush arrives well packaged and is very easy to setup. I do use the app (iOS) while brushing my teeth. The build quality is top notch, it doesn't feel cheap. This should be expected being how expensive this toothbrush can go for. One of the reasons I chose this toothbrush over the lower models is due to its design and not having a physical button where grime can build up. The fewer crevices there are, the easier it is to keep the toothbrush clean and functioning properly. The charging puck is nice and works well. If I had any suggestions of improvement, it would be that the plastic piece that sits on top of the charger snap in place instead of just resting on top. It's so lightweight that and doesn't secure itself, that any attempt to move the charger or a bump to it can knock the plastic mount off of the charging puck. Other than that, the toothbrush sits securely and I haven't had an incident yet that could knock the toothbrush off. When brushing my teeth, I use the app and set the tooth brush to it's deep clean mode for a longer brush time. I can honestly say I don't recall my teeth ever feeling this clean from brushing at home. The closest experience I can compare it to is after having my teeth cleaned at the dentist. My whole mouth feels cleaner, my teeth feel smooth and polished, morning breath has been greatly reduced, and I have even noticed my teeth looking noticeably whiter as this toothbrush does an excellent job at removing stains (I don't smoke, but I do drink coffee and sodas). I was starting to notice this within the first 2 weeks of using the toothbrush and after about 1.5 months of use I still have the extra clean feeling after every brush and more stains have been removed from my teeth. The toothbrush is very easy to keep clean, especially with fewer crevices for grime to get caught up in. I also find that this toothbrush is less messy when being used, less drippage and such. My previous toothbrush, an Oral-B was horrendous for this. It had lots of crevices for grime to get into and the design of the brush heads allows toothpaste and saliva to drip down the handle. No such problem with this toothbrush. When I first got the toothbrush, one of my initial complaints was that it didn't allow me to capture my brushing data into Apple Health. But a few weeks ago Philips released an update to their app that does allow some data to be recorded into Apple Health, so that is a good start. Another complaint that I have which is related to the app (and how the toothbrush interprets input) is I sometimes run into problems with the toothbrush and app properly capturing the position and placement of my toothbrush. Even though I may be brushing in the area it wants me to, sometimes it has a hard time recognizing if I am brushing on the outside or the inside. When this happens, it may not flag enough time being brushed in that area and want me to brush for an additional amount of time to touch up those areas. And it isn't always the same area. This may be due to a calibration problem and it would nice if there was an easy way to quickly recalibrate the toothbrush so that it can better identify its position. On a side note, if you plan to use the app to track your brushing habits, I recommend getting something to mount your phone to your mirror. It will make using the app while brushing a lot easier. I do like how the app and toothbrush track the life of your brush head and recommends when it is time to replace it. Typical recommendation to replace a brush head is ever 3 months. I am currently two weeks away from 2 months of use and based on my current usage, it looks like I will be prompted to replace my brush head in about 2 weeks. So why am I getting about 2 months use out of my brush head instead of three? If I had to guess, it may be due to me doing the Deep Clean option which runs for 50% longer than a typical brushing session, 3 minutes vs 2 minutes. As such, the app and toothbrush may not be calculating my brush head use by number of sessions (like it displays it as) but really by how much time the brush head is used for. TL;DR The toothbrush is phenomenal but pricey. If you don't mind spending the money, or find it on sale, you won't be disappointed in the performance of the toothbrush. It does an excellent job at cleaning your teeth and removing stains. The app is decent, but there is always room for improvement. But seeing that improvements have already been made in the short time I have been using the toothbrush, I am hopeful that the app will continue to get better in the coming months. Adding an easy to use recalibrate option for its positioning awareness, I think, will be extremely helpful. I would also like to see more data being captured in Apple Health instead of just brush duration. The app captures a lot more data points that I would like be viewed in Apple Health as well. Not sure if this is a limitation with Apple Health or the app.

### ⭐ Garbage
*by R***S on November 28, 2023*

TLDR; Its a bog standard electric toothbrush with nothing special about it at all. Save your money and get something more reliable. The long version; It's unreliable charging on the base it comes with. It has been since I got it. Maybe there's a secret dance you're supposed to do to get the charger to work reliably as you place the toothbrush on it's charger? If there is, I don't know it and I find charging this toothbrush one of the most frustrating, unsatisfactory usages of my time. I'm literally to the point where I have to stand in front of the charger that I've placed the toothbrush on, and just wait. Is it going to start beeping at me eventually? How long do I have to stand here before I'm confident there'll be no issue with the brush charging? Who knows?? I haven't figured that out 100% yet and I've hovered over this toothbrush for a full minute before it finally indicated it wasn't charging right. How do I know? I recorded it! I feel like a lunatic having to say this stuff so I needed the data to prove to myself - I'm not imagining it. I'm not exaggerating. I will happily share the footage with anyone who asks. I've been fussing with this toothbrush since April when I got it and it's now November. I told myself, "it's too expensive to just give up on! Surely it's just a matter of user error right??" Nah. This is a known issue by Philips. I searched for a solution thinking I must just be missing something. Their FAQ first frames it as user error, telling users not to charge with the wrong base. Philips charging bases aren't interchangeable. Really Philips? How is that cost effective or smart design in any fashion? Do better. But let's not get hung up on that. This base came with the brush at the time of purchase. Moving on. They tell you things like "make sure your charger is not on a metal surface." -_- Is there a lot of metal in the average persons bathroom? I ask because I feel like I'm being gaslit by Philips into thinking I'm just incompetent as a toothbrush or tech user somehow. I know a lot of metal exists in some bathrooms. But I haven't seen a lot of people using those metal filled bathrooms to charge their toothbrush in. Those bathrooms are usually in gyms, military ships, convenience stores, or public restrooms that get high traffic. It starts to feel insulting when I'm working so diligently to get this very expensive item to work, to do a necessary task, twice a day, to have the maker say things like this when it's obviously a known issue if you do a 5 second internet search. Heaven forbid you place it on the charger and you think it's charging so you walk away. Unbeknownst to you, there's a small faint beep that's started since you left. You go to pick it up to use it the next time you want to brush your teeth and you might notice it doesn't work. Guess what! Your toothbrush is dead as a doornail. It's not charged. I've taken to trying to brush my teeth additional times throughout my day, to try and avoid being caught out by a dead toothbrush, right before I go to bed or when I need to get out the door for work/life. How is that an efficient use of my time? But if I don't - I run the risk of not being able to properly care for my teeth and brush thoroughly twice a day. Does Philips know how stupid they make customers feel with their crappy product and apparent disinterest in making sure their tech has any sort of reliable quality standard. "I spent a lot of money on a well reviewed toothbrush that's supposed to be one of the best so I don't have to spend loads of extra money, time, pain or suffering over dental issues. Does it have charge yet? Can I use it yet? No? Dang." Sure, I can use it manually - but doesn't that defeat the point here??? I'm sick of companies not valuing customers time, money or shopping efforts to find and acquire products they need in their lives. I'm sick of companies producing the most minimal pieces of junk they can possibly spew out, slapping some proverbial lipstick on their frankenstein pig creation by making it pretty colors or shiny (seriously? a shiny charger? for a toothbrush? you've brushed your teeth before right Product Designers of Philips? I know you know toothbrushes drain. The stand you include has drainage. Why doesn't the charger? Why is the charger gold? Is that a good look to someone, with the way a toothbrush drains a sort of toothpaste tinted water?) Toothbrushes drain downwards onto chargers. Duh, right? I get that working chargers aren't really Philip's thing but it feels necessary to point this out because it seems like if you use your toothbrush and it indicates it needs charged, and you place it on the charger - Philips would understand, there's gonna be some water drainage. I find that if my toothbrush has any water in, on or around it - it freaks out and can't charge. I have to literally ~dry~ my toothbrush to try and charge it. I don't mean just wipe the base and sides of it with a microfiber cloth. I mean, make sure you flick every speck of water out of the head, then wipe down the sides and base, wipe down the charger, and take off the head. Wipe any water you might find that got under the head at the point where it connects, and then place it on the charger. Even then it's not guaranteed to work. Don't walk away, you're not done. You need to start a timer for yourself. At least 1 minute. You're gonna wanna wait to see if you missed even the tiniest bit of water that makes its way down to the charger so you can dry that too. You'll know because the charger will start making your toothbrush beep and flash like it's about to self-destruct. I don't remember any of this being included in it's advertising. I'm pretty sure if someone had told me the toothbrush I'm considering purchasing needs dried to the point of OCD - I'd have had 2nd thoughts about such a purchase. Especially for the price I paid. So no. I would not recommend this toothbrush. If someone knows of one that's better, hit me up. And if anyone from Philips actually takes the time to read this, you're welcome. Product ideas make bank. I've given you a lot here. A charger that drains. A charger that's not gold. A toothbrush that can handle being wet and still charge. A quality toothbrush that does what it's supposed to would ensure customer loyalty and lock them in to buying replacement heads for life. Get it together.

## Frequently Bought Together

- Philips Sonicare 9900 Prestige Rechargeable Electric Power Toothbrush with SenseIQ, Champagne, HX9990/11
- Philips Sonicare A3 Premium All-in-One, Genuine Replacement Toothbrush Heads, White, 2 Pack, HX9092/65
- Philips Sonicare Cordless Power Flosser 3000 + 2 Additional Nozzles (4 Total) White, HX3827/21

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-10*