Philips - Sonicare Series 9900 Prestige Sonic Electric Toothbrush...
A brush that learns and adapts to how you brush, for your most complete clean yet. Philips Sonicare 9900 Prestige with SenseIQ technology is our most advanced electric toothbrush. Sensing your every move and adapting to your needs in real time for exceptional care. As you brush, pressure, motion, coverage and more are monitored up to 100 times per second. The brush then adapts automatically in real time for advanced teeth and gum care.
A brush that learns and adapts to how you brush, for your most complete clean yet. Philips Sonicare 9900 Prestige with SenseIQ technology is our most advanced electric toothbrush. Sensing your every move and adapting to your needs in real time for exceptional care. As you brush, pressure, motion, coverage and more are monitored up to 100 times per second. The brush then adapts automatically in real time for advanced teeth and gum care.
A brush that learns and adapts to how you brush, for your most complete clean yet. Philips Sonicare 9900 Prestige with SenseIQ technology is our most advanced electric toothbrush. Sensing your every move and adapting to your needs in real time for exceptional care. As you brush, pressure, motion, coverage and more are monitored up to 100 times per second. The brush then adapts automatically in real time for advanced teeth and gum care.
A brush that learns and adapts to how you brush, for your most complete clean yet. Philips Sonicare 9900 Prestige with SenseIQ technology is our most advanced electric toothbrush. Sensing your every move and adapting to your needs in real time for exceptional care. As you brush, pressure, motion, coverage and more are monitored up to 100 times per second. The brush then adapts automatically in real time for advanced teeth and gum care.
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The lowest price for Philips - Sonicare Series 9900 Prestige Sonic Electric Toothbrush... right now is $303.95 at eBay.com.au, compared across 12 retailers.
The all-time low was $159.12 on 18 May 2025 — today's price is 91% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 Oct 2026.
Last updated at 01/10/2026 05:34:55
Philips Sonicare 9900 Prestige Our Most Advanced Electric Toothbrush HX9992/11 with SenseIQ, All-in-One Brush Head, Artificial Intelligence in the
Free delivery
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PHILIPS Sonicare 9900 Prestige Rechargable Electric Toothbrush with SenseIQ, Our Most Advanced Toothbrush, All-in-One Brush Head, AI-Powered Sonicare
Free delivery
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PHILIPS Sonicare 9900 Prestige Rechargable Electric Toothbrush with SenseIQ, Our most advanced toothbrush, All-in-One brush head, AI-powered Sonicare
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare 9900 Prestige Rechargeable Electric Power Toothbrush with SenseIQ, Pink, HX9990/13
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Philips Sonicare DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels,
Free delivery
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Philips Sonicare 9900 Prestige Rechargeable Electric Power Toothbrush with SenseIQ, Pink, HX9990/13
Delivery $16.80
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Philips Sonicare DiamondClean Prestige 9900 Rechargeable Electric Toothbrush with SenseIQ, 5 Premium All-in-One Brush Heads, Plaque Removal, Gum Care,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare Diamondclean Prestige 9900 Power Toothbrush W/
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare Diamondclean Prestige 9900 Power Toothbrush W/
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare Diamondclean Prestige 9900 Power Toothbrush W/
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on philips.com.au
I bought this product when my old Sonicare Diamond started to get really loud and just didn't brush as well anymore. Unboxing it was a treat. The packaging, the handle, brushes and charging case all looked really good. The app worked well with the brush and I was loving it. I particularly loved the tongue brush that came with the box.After about three months, the toothbrush went from a nice quiet buzz to extremely loud and the brush function just wasn't doing it's job. I thought, oh no! Not again. So, I contacted Philips through the app and was given the phone number to contact them. The support centre for Australia were extremely good. They asked me a series of questions about the toothbrush and what was happening and assessed that I needed a replacement handle ... MoreI bought this product when my old Sonicare Diamond started to get really loud and just didn't brush as well anymore. Unboxing it was a treat. The packaging, the handle, brushes and charging case all looked really good. The app worked well with the brush and I was loving it. I particularly loved the tongue brush that came with the box.After about three months, the toothbrush went from a nice quiet buzz to extremely loud and the brush function just wasn't doing it's job. I thought, oh no! Not again. So, I contacted Philips through the app and was given the phone number to contact them. The support centre for Australia were extremely good. They asked me a series of questions about the toothbrush and what was happening and assessed that I needed a replacement handle which they organised very quickly.I've had the replacement for about two months and it's going well. The toothbrush is awesome and does what it says it will do. My gums feel healthy, my teeth look whiter and I'm pretty happy in general with the product. I also trust Philips to replace the handle should anything go wrong again. Fingers crossed.
originally posted on philips.co.uk
Been using this brush for 2 months after 20 years of using the only real alternative manufacturer on the market. With this elite Phillips brush, you have to brush for well over 2 mins on max setting to get the feel of clean that 2 mins with a non-Philips brush gives you on a medium setting.The battery on these devices is nothing like reviewed or advertised, mine lasts less than a week brand new. Perhaps due to needing to brush for so long everyday as per my first point.The smart brush head has told me I need to replace it after 5 weeks of usage.I’ve had electrical problems, brush randomly switching off, sometimes after 5 seconds of running. Not being able to switch it off. Not connecting to the iPhone app and having to delete the device from Bluetooth and ... MoreBeen using this brush for 2 months after 20 years of using the only real alternative manufacturer on the market. With this elite Phillips brush, you have to brush for well over 2 mins on max setting to get the feel of clean that 2 mins with a non-Philips brush gives you on a medium setting.The battery on these devices is nothing like reviewed or advertised, mine lasts less than a week brand new. Perhaps due to needing to brush for so long everyday as per my first point.The smart brush head has told me I need to replace it after 5 weeks of usage.I’ve had electrical problems, brush randomly switching off, sometimes after 5 seconds of running. Not being able to switch it off. Not connecting to the iPhone app and having to delete the device from Bluetooth and re-add it.The app itself or brush wants you to brush your teeth in 6 sections, when it works much better in 4 in terms of efficiency of moving the brush around so it has rendered my use of the app useless.Overall, this brush falls very short across the board.The positives. Looks good, the hum is better than the sound of Non-Philips toothbrush motors, although I’m not convinced it’s quieter. The travel case is nice and compact. The app is nice if you need that, but becomes almost pointless as you learn how to brush with this style of brush.
originally posted on philips.com
Honestly, it's a beautiful toothbrush (I got it in rose gold) so it's pretty on my countertop. I also love that it's thoughtfully designed. The charging base has a frosted plastic cover so it doesn't get wet but doesn't ruin the appeal. The toothbrush is lightweight, and the bottom flashes between two different colors depending on if you are moving around too much or pressing too hard. I also love the buzz to let you know to move on from a section. I also know I'm getting a great clean when I'm using this toothbrush!I love the three strength settings too. I'm still on level 1, which is plenty for me, but I like that it can be controlled as I know other electric toothbrushes don't always allow for that. Even on level 1, sometimes I'll splash a bit and foam quite a ... MoreHonestly, it's a beautiful toothbrush (I got it in rose gold) so it's pretty on my countertop. I also love that it's thoughtfully designed. The charging base has a frosted plastic cover so it doesn't get wet but doesn't ruin the appeal. The toothbrush is lightweight, and the bottom flashes between two different colors depending on if you are moving around too much or pressing too hard. I also love the buzz to let you know to move on from a section. I also know I'm getting a great clean when I'm using this toothbrush!I love the three strength settings too. I'm still on level 1, which is plenty for me, but I like that it can be controlled as I know other electric toothbrushes don't always allow for that. Even on level 1, sometimes I'll splash a bit and foam quite a bit, but it just took a bit of getting used to. I'm happy to adjust knowing I'm getting cleaner teeth in return!I did start with the app, which was cool to see where I might have missed a spot in my teeth, but I've since stopped using it as the toothbrush itself has plenty of features to help guide me in my toothbrushing.It is pricey, but well worth it. I also was able to use my HSA dollars towards it to lessen the pain of the cost!
Philips Sonicare 9900 Prestige Our Most Advanced Electric Toothbrush HX9992/11 with SenseIQ, All-in-One Brush Head, Artificial Intelligence in the
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
PHILIPS Sonicare 9900 Prestige Rechargable Electric Toothbrush with SenseIQ, Our Most Advanced Toothbrush, All-in-One Brush Head, AI-Powered Sonicare
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
PHILIPS Sonicare 9900 Prestige Rechargable Electric Toothbrush with SenseIQ, Our most advanced toothbrush, All-in-One brush head, AI-powered Sonicare
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare 9900 Prestige Rechargeable Electric Power Toothbrush with SenseIQ, Pink, HX9990/13
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Philips Sonicare DiamondClean 9900 Prestige Electric Toothbrush - with SenseIQ Technology and Advanced AI App, 5 Brushing Modes, 3 Intensity Levels,
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
I bought this product when my old Sonicare Diamond started to get really loud and just didn't brush as well anymore. Unboxing it was a treat. The packaging, the handle, brushes and charging case all looked really good. The app worked well with the brush and I was loving it. I particularly loved the tongue brush that came with the box.After about three months, the toothbrush went from a nice quiet buzz to extremely loud and the brush function just wasn't doing it's job. I thought, oh no! Not again. So, I contacted Philips through the app and was given the phone number to contact them. The support centre for Australia were extremely good. They asked me a series of questions about the toothbrush and what was happening and assessed that I needed a replacement handle ... MoreI bought this product when my old Sonicare Diamond started to get really loud and just didn't brush as well anymore. Unboxing it was a treat. The packaging, the handle, brushes and charging case all looked really good. The app worked well with the brush and I was loving it. I particularly loved the tongue brush that came with the box.After about three months, the toothbrush went from a nice quiet buzz to extremely loud and the brush function just wasn't doing it's job. I thought, oh no! Not again. So, I contacted Philips through the app and was given the phone number to contact them. The support centre for Australia were extremely good. They asked me a series of questions about the toothbrush and what was happening and assessed that I needed a replacement handle which they organised very quickly.I've had the replacement for about two months and it's going well. The toothbrush is awesome and does what it says it will do. My gums feel healthy, my teeth look whiter and I'm pretty happy in general with the product. I also trust Philips to replace the handle should anything go wrong again. Fingers crossed.
Been using this brush for 2 months after 20 years of using the only real alternative manufacturer on the market. With this elite Phillips brush, you have to brush for well over 2 mins on max setting to get the feel of clean that 2 mins with a non-Philips brush gives you on a medium setting.The battery on these devices is nothing like reviewed or advertised, mine lasts less than a week brand new. Perhaps due to needing to brush for so long everyday as per my first point.The smart brush head has told me I need to replace it after 5 weeks of usage.I’ve had electrical problems, brush randomly switching off, sometimes after 5 seconds of running. Not being able to switch it off. Not connecting to the iPhone app and having to delete the device from Bluetooth and ... MoreBeen using this brush for 2 months after 20 years of using the only real alternative manufacturer on the market. With this elite Phillips brush, you have to brush for well over 2 mins on max setting to get the feel of clean that 2 mins with a non-Philips brush gives you on a medium setting.The battery on these devices is nothing like reviewed or advertised, mine lasts less than a week brand new. Perhaps due to needing to brush for so long everyday as per my first point.The smart brush head has told me I need to replace it after 5 weeks of usage.I’ve had electrical problems, brush randomly switching off, sometimes after 5 seconds of running. Not being able to switch it off. Not connecting to the iPhone app and having to delete the device from Bluetooth and re-add it.The app itself or brush wants you to brush your teeth in 6 sections, when it works much better in 4 in terms of efficiency of moving the brush around so it has rendered my use of the app useless.Overall, this brush falls very short across the board.The positives. Looks good, the hum is better than the sound of Non-Philips toothbrush motors, although I’m not convinced it’s quieter. The travel case is nice and compact. The app is nice if you need that, but becomes almost pointless as you learn how to brush with this style of brush.
Honestly, it's a beautiful toothbrush (I got it in rose gold) so it's pretty on my countertop. I also love that it's thoughtfully designed. The charging base has a frosted plastic cover so it doesn't get wet but doesn't ruin the appeal. The toothbrush is lightweight, and the bottom flashes between two different colors depending on if you are moving around too much or pressing too hard. I also love the buzz to let you know to move on from a section. I also know I'm getting a great clean when I'm using this toothbrush!I love the three strength settings too. I'm still on level 1, which is plenty for me, but I like that it can be controlled as I know other electric toothbrushes don't always allow for that. Even on level 1, sometimes I'll splash a bit and foam quite a ... MoreHonestly, it's a beautiful toothbrush (I got it in rose gold) so it's pretty on my countertop. I also love that it's thoughtfully designed. The charging base has a frosted plastic cover so it doesn't get wet but doesn't ruin the appeal. The toothbrush is lightweight, and the bottom flashes between two different colors depending on if you are moving around too much or pressing too hard. I also love the buzz to let you know to move on from a section. I also know I'm getting a great clean when I'm using this toothbrush!I love the three strength settings too. I'm still on level 1, which is plenty for me, but I like that it can be controlled as I know other electric toothbrushes don't always allow for that. Even on level 1, sometimes I'll splash a bit and foam quite a bit, but it just took a bit of getting used to. I'm happy to adjust knowing I'm getting cleaner teeth in return!I did start with the app, which was cool to see where I might have missed a spot in my teeth, but I've since stopped using it as the toothbrush itself has plenty of features to help guide me in my toothbrushing.It is pricey, but well worth it. I also was able to use my HSA dollars towards it to lessen the pain of the cost!
The best part of this toothbrush is the case and type C charger. The case is compact and beautiful and the magnetic closure is good too although I wish it were a little stronger. The toothbrush itself works great. I would recommend to someone who does NOT change brush modes. I however do change brush modes. You can't do that from the handle of the brush, you must open the app on phone to do so. When you are rushing, that is not feasible. I also thought that this was a smart brush that would change modes based on the brush head being used but to my disappointment, that is not a feature either. I would like a little more weight in the brush handle as it feels like it's going to fall out of my hands quite a bit. It's not slippery, just weightless... feels cheap, ... MoreThe best part of this toothbrush is the case and type C charger. The case is compact and beautiful and the magnetic closure is good too although I wish it were a little stronger. The toothbrush itself works great. I would recommend to someone who does NOT change brush modes. I however do change brush modes. You can't do that from the handle of the brush, you must open the app on phone to do so. When you are rushing, that is not feasible. I also thought that this was a smart brush that would change modes based on the brush head being used but to my disappointment, that is not a feature either. I would like a little more weight in the brush handle as it feels like it's going to fall out of my hands quite a bit. It's not slippery, just weightless... feels cheap, especially when compared to the original sonicare Diamondclean. If you are like me, you want something beautiful in your bathroom and this brush just is not as beautiful as my white and silver original sonicare diamondclean. Speaking of white and silver, what are these horrible colors this 9900 comes in??? I have the champagne color thinking it would be tolerable but I'm definitely having buyers remorse. I have gone back to using my non smart diamond clean. One last thing, the app does not guide you to brush the biting surfaces of teeth so when you run your brush over those surfaces you will take time away from other surfaces and your app will say you did not brush for 2 minutes. The touch up option on app is hit or miss as it sometimes pops up and sometimes it doesn't. Do yourself a favor and just buy the non smart original diamondclean.
My previous experience from electric toothbrush was 10 years ago, it was just a shaking stick with small brush, so I been sticking to manual since… Decided to try again with this model and Im never going back!The first few times was pretty weird and had to learn how to not use it as a manual brush, but starting to get the hang of it a week in. Can definitely feel a difference in teeth and gum! The price is high but hopefully my dentistbill will be reduced…The only negative thing about this is the bad app and that youre not allowed to brush how you want; you can choose startpoint but nothing after that, so not getting the full benefits. Please fix!
After 2 uses, I could feel the difference in my teeth. I've used Sonicare for years, and this is best by far. No impressed with the APP, but the new head design gets between the teeth and makes my teeth feel smooth and clean. This time, I actually read and followed the brushing instructions. Hold the brush at 45 degree angle. I really don't care about the sensors, and the strength of the ultrasonic vibration seems similar to my old diamond clean. The travel case is compact. My last brush failed in less than 2 years, hopefully this will last longer. Photos show app feedback and comparison to older brush design.
After about 9 months of using this toothbrush, the metal pin shaft fell off from the base of the device during bruising, and it took more than a month to get a new replacement. But the second one only lasted a month when the turning of the metal shaft stated to give a loud screechy noise, and the customer service sent me another replacement this time quite quickly within a week; but but but, the third tooth brush only lasted two month, and the metal pin started to get loose and wobbly and producing loud noise like a screaming cat!!!! I just don’t want to call them again to have another replacement…even they still give me a new one!!! What a rubbish product, all the problems is to do with that metal pin Shaft, that shows there is a serious flaw with the motor of this ... MoreAfter about 9 months of using this toothbrush, the metal pin shaft fell off from the base of the device during bruising, and it took more than a month to get a new replacement. But the second one only lasted a month when the turning of the metal shaft stated to give a loud screechy noise, and the customer service sent me another replacement this time quite quickly within a week; but but but, the third tooth brush only lasted two month, and the metal pin started to get loose and wobbly and producing loud noise like a screaming cat!!!! I just don’t want to call them again to have another replacement…even they still give me a new one!!! What a rubbish product, all the problems is to do with that metal pin Shaft, that shows there is a serious flaw with the motor of this device, but how come this is actually their unique selling point: 3 speed control! It’s totally rubbish.. don’t waste your money but this. It’s the worst toothbrush I have ever used!!!
I’ve used the older models and always had great success. Been using Sonicare now almost 20 years and this is the first time I got a cavity. Only thing different was that I got this toothbrush model. I had a checkup in December 2022 and was free of cavities. Then I got this toothbrush right after since my old one died and within 2 months a cavity. very upset about it. I also notice it doesn’t clean tartar off well in crevices. I have to brush for 4-6 minutes to get it super clean. I will not buy this model again in the future. I’ll stick to the midrange reliable models. App isn’t very good either.
20 days after purchase the handle battery is dead and cannot be charged. Replacement service is awful and absolute waste of time. During my 20 days experience with this extremely expensive toothbrush my observations are as follows:- Battery lasts for a few days and must be charged.- The tracking on the app is not precise and would be in error most of the time and would show that you covered parts that you actually did not cover and the opposite. This happens even if you go with the set direction and starting position. If you do not start from that point, it would be even worse. It is not reliable.- The stats in the app - extremely limited. Tips - well if you think that 3 tips that repeat all the time is usable to you, than yeah it provides you tips.- ... More20 days after purchase the handle battery is dead and cannot be charged. Replacement service is awful and absolute waste of time. During my 20 days experience with this extremely expensive toothbrush my observations are as follows:- Battery lasts for a few days and must be charged.- The tracking on the app is not precise and would be in error most of the time and would show that you covered parts that you actually did not cover and the opposite. This happens even if you go with the set direction and starting position. If you do not start from that point, it would be even worse. It is not reliable.- The stats in the app - extremely limited. Tips - well if you think that 3 tips that repeat all the time is usable to you, than yeah it provides you tips.- Cleaning - ok....but you get the same with a $100 toothbrush.- To change modes you need the app.- Materials - did not appear to be expensive and solid, no difference to me to $100 toothbrush. The inside of the box was with dust.Absolute waste of money. The app is of very little use, the tracking is malfunctioning all the time, stats extremely limited, battery does not last for long, quality is not reliable.I would not advise to buy this toothbrush.
I have been using Sonicare toothbrushes for years, so when it was time to replace my previous model, I decided to go for the best! I am so happy with this model. It cleans my teeth so much better than any toothbrush I have ever used. I love the technology. It alerts me if I apply too much pressure or move the brush too fast while brushing. I can use my smartphone to follow my brushing session to see if I have adequately cleaned each area. There are multiple modes I can use, such as “deep clean” or “whitening” and each mode is perfectly timed. The smartphone app keeps track of my brushing habits and makes suggestions for the most effective cleaning experience. The Prestige 9900 also tells me when I need to replace the brush head and even allows me to auto order using ... MoreI have been using Sonicare toothbrushes for years, so when it was time to replace my previous model, I decided to go for the best! I am so happy with this model. It cleans my teeth so much better than any toothbrush I have ever used. I love the technology. It alerts me if I apply too much pressure or move the brush too fast while brushing. I can use my smartphone to follow my brushing session to see if I have adequately cleaned each area. There are multiple modes I can use, such as “deep clean” or “whitening” and each mode is perfectly timed. The smartphone app keeps track of my brushing habits and makes suggestions for the most effective cleaning experience. The Prestige 9900 also tells me when I need to replace the brush head and even allows me to auto order using my Amazon Echo/Alexa.
