Philips Sonicare DiamondClean Smart 9300 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9903/15
$229.99 Original price was: $229.99.$179.99Current price is: $179.99.







Philips Sonicare DiamondClean Smart 9300 electric toothbrush provides complete and efficient oral care, removing up to 20x more plaque¹, providing up to 15x healthier gums¹ and removing up to 100% more stains than a manual toothbrush. High-performance brush heads let you focus on all areas of your oral health, while our Smart Sensor technology gives you personalized feedback and coaching.
There are 4 brushing modes: Clean mode for daily cleaning, White+ for stain removal, Gum Health for gentle but effective cleaning of the gums and Deep Clean+ for a refreshing, thorough clean. There are also 3 intensity levels to choose from.
The built-in Philips Sonicare light ring pressure sensor lets you know if you’re pressing too hard. Advanced Sonic Technology provides gentle yet effective cleaning, pulsing fluid between teeth and along the gumline with a cleaning power of 62,000 bristle movements per minute.
By connecting to the Philips Sonicare app, you will be able to receive personalized brushing guidance to maintain and improve your brushing habits. The app lets you know when you’ve achieved a thorough clean and coaches you to be a better, more mindful brusher. The innovative BrushSync™ technology will let you know when it’s time to change your brush head. Improve your brushing technique with QuadPacer and reach your recommended brushing time of 2 minutes with SmarTimer.
Philips Sonicare DiamondClean Smart 9300 works perfectly as a travel toothbrush thanks to the travel case. You can also top up the power at home with the iconic charging glass. With regular use, the battery will last up to two weeks on a single charge (based on two periods of two-minute brushings per day on standard mode).
¹ vs. a manual toothbrush
² vs. a manual toothbrush. In-vitro study, actual results may vary
³ based on a study of over 2,600 dental professionals (dentists and hygienists) conducted in the United States, Canada, Japan, China, Korea, Thailand, Germany, the United Kingdom, Switzerland, France, Belgium, Austria, Italy, Spain, Sweden in 2022-2023
Product Dimensions : 4.37 x 6.85 x 9.92 inches; 2.31 Pounds
Item model number : HX9903/15
Batteries : 1 Lithium Ion batteries required. (included)
Date First Available : October 30, 2023
Manufacturer : Philips Sonicare
ASIN : B0CM426N2Y
Best Sellers Rank: #14,276 in Health & Household (See Top 100 in Health & Household) #51 in Sonic Toothbrushes
Customer Reviews: 4.4 4.4 out of 5 stars (867) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Advanced sonic toothbrush for improved oral health: achieve up to 20x more plaque removal¹, up to 15x healthier gums¹, and remove up to 100% more stains than a manual toothbrush
Personalize your brushing with this innovative electric toothbrush: choose from 4 brushing modes and 3 intensity levels to meet your oral healthcare goals
Real-time feedback: the light ring on the end of your handle will flash if you use too much pressure, reminding you to ease off the pressure and protect your teeth and gums
Personalized guidance: connect your toothbrush to the Philips Sonicare app and receive personalized brushing guidance to maintain and improve your brushing habits
#1 dental professional recommended sonic toothbrush brand worldwide³: benefit from Philips expertise to keep your teeth and gums in the best condition
The set includes: 1x DiamondClean Smart 9300 sonic electric toothbrush, 1x A3 Premium All-in-One brush head, 1x C3 Premium Plaque Control brush head, 1x charging glass and stand, 1x travel case
13 reviews for Philips Sonicare DiamondClean Smart 9300 Electric Toothbrush, Sonic Toothbrush with App, Pressure Sensor, Brush Head Detection, 4 Brushing Modes and 3 Intensity Levels, Black, Model HX9903/15
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Jstanley –
The best there is on the market!
Highly recommend! The quality and comfort this toothbrush provides is beyond my expectations! It’s been easy to use and provides a better clean than any other brush (electric or standard) I’ve ever tried. It is easy to travel with considering it has a travel case that comes with and the battery lasts a week or more on a single full charge. Definitely worth every penny!
Lex –
Perfect toothbrush with long battery life
Bought this after doing some research between all the different electric toothbrushes. The battery lasts FOREVER and I love how it tells me when I’m brushing too hard. My teeth feel so much cleaner compared to my last one and it’s super cute looking too. The travel case is perfect and has definitely come in handy. Highly recommend!
Deanna Cason –
Best Toothbrush
I have been a sonicare user for almost 10 years. The quality of the product is amazing and if there is ever an issue with the product, their customer service is outstanding. So I am not a twice a day, or even regularly floss and my dentist is always amazed at how little to no build up I have on my teeth and never have any dental issues. The different cleaning modes is a great option and having the ability to change the vibration intensity. Yes, the price may seem a bit high, but to have healthy teeth and gums and never need expensive dental work, I would say it is worth the cost.
Brenda Pelletier –
Great toothbrush for managing oral health
This is my first Phillips toothbrush, and I’m really enjoying it. While it is quite pricey, the payout is in minimizing issues at the dentist’s chair. I really appreciate that the app helps manage time spent in each area of the mouth, pressure, and scrubbing. It also enables you to flag problem areas requiring additional attention, reminding you to take extra care there. After reading some of the comments regarding concerns with charging via a cup, I was also concerned regarding how this may look. That said, I was surprised to see that there is an alternative option for a separate charging stand which is smaller in size and enables the toothbrush to stand upright. I prefer this option, and think it looks very clean and organized. I will second that the travel case does not charge the toothbrush itself. However, I consider this an extra luxury (an electric of toothbrush of this size is NOT one I would have ever considered “travel size” in the first place – a bit of clunkiness should be expected). I would be just as satisfied to pack the charger separately or temporarily opt for a non-electric toothbrush for lengthy travel. All in all, I’m very satisfied with the quality of this toothbrush.
Kristi –
Avoid the 9300 Series at all costs!
This is my 2nd DiamondClean Toothbrush. The first one lasted almost 10 years and worked like a dream. This one has a problem with the design. I bought it in February and within a couple of months, it stopped vibrating and instead, just spasmed. I contacted Sonicare and they sent a replacement. Within a month of getting that replacement, it started the same behavior where it would not function correctly. It is now a countertop decoration. I love DiamondClean, but not the 9300 Series. It has a design flaw that my previous toothbrush didn’t. Unfortunately, it was a waste of $200 and I am now using an Oral B. I would have LOVED to have stayed with DiamondClean as they leave you feeling like you just left the dentist every single morning. But this Series has a design flaw. DO NOT PURCHASE THIS PARTICULAR SERIES!
laura hunt –
Fabulous toothbrush
I upgraded from an older model, sonicare toothbrush. With the first use, my teeth were noticeably whiter. Five brushes in, and it’s like I have a new mouth. I was actually considering veneers or other options to get a better smile. I am delighted. It is well worth the money. I chose this model because it was a little cheaper than the top of the line, but offered all of the same major features.
Brian –
Great toothbrush, but lifespan TBD
I owned a cheaper Sonicare for almost ten years. It finally broke (brush head mount seemed to disconnect from the motor) this spring. I replaced it with the DiamondClean 9300 for the app connectivity and pressure sensor. After six months of normal use it broke, same issue I experienced with my older toothbrush. The brush head didn’t vibrate correctly and the base made significantly more noise than it should. After navigating Amazon’s support structure and registering with Phillips for replacement (covered under the two year warranty) I got my new toothbrush base and sent the old one back. I’ve only been using the new one for a month, I’ll report back if the first was a fluke or if I end up with another warranty claim in five months. Rating would be five stars except for durability to date.
Mary –
Do Your Teeth A Favor and Buy This Toothbrush NOW!
Absolutely blown away with this electric toothbrush. I honestly didn’t buy one of these for years because I thought it was being hyped for no reason. I decided to purchase one after learning how much it helped my Dad with his teeth after his lingual nerve was severed during wisdom tooth removal. He told me that his dentist noticed a huge difference in how much plaque was on the left side of his mouth (the side that was damaged due to the nerve sever). I was sold. I have been using this brush for maybe a year and I have not had one cavity since using it. My teeth feel cleaner right after I brush. I can tell a difference and my dentist can too. This toothbrush gets not only my seal of approval but my dentist’s approval too!I should also mention that I enjoy the blue tooth connectivity to the app. It makes sure I brush all sections of my mouth evenly, with not too much pressure or scrubbing. It gives real time feedback as you brush. I found this brush easy to use because of the app. I feel if I didn’t have the direction of the app (at least in the beginning) I would have been confused as I was so used to scrubbing my teeth. The charge lasts well over a week. The cute cup charger is a definite bonus because it looks good on my counter.Overall, I highly recommend this toothbrush. Do your teeth a favor and buy one sooner rather than later.
Paola –
Desde la primer lavada sientes la diferencia
Daria Stim –
good
Sébastien Millette –
La qualité du nettoyage effectué est celle attendue, à savoir excellente. C’est ma deuxième brosse à dents de cette qualité, à savoir haute gamme et je ne suis aucunement déçu. Je n’utilise pas toutes ses fonctionnalités par choix, mais elle en possède plusieurs; comme mon dentiste se plaît à dire “c’est une excellente brosse à dents électrique, une plus de base aurait été aussi bonne, le restant des fonctionnalités n’est que gadget dans cette gamme-là”.Mon conseil: ne la remettez pas sur le socle branché dans la prise électrique après chaque utilisation, j’ai fait cela avec mon ancienne Philips et la batterie n’a pas duré le temps supposé; après quelques années, elle soutenait à peine la charge pour un brossage. Quand on sait que le moteur est garanti officiellement pour durer minimalement 10 ans, il est fâchant de devoir s’en départir à cause de la batterie. Je me suis donc promis de la recharger seulement lorsque le voyant de la batterie clignote, c’est-à-dire environ une fois semaine. Seul l’avenir me dira si cette pratique est efficace. 🤷
Pete –
Diamond clean is a beautiful brush. Connects to iPhone app to record & monitor your session and gives pointers to improve your brushing.I had an OralB brush before. I like this better.
Canadian Reviewer –
Fast delivery, works and the battery is solid, my 5th brush with sonics care and this was the freshest battery i’ve had, take about 8-10 days before it needs a recharge, this is a must have, I pay dearly in Canada for dental benefits and haven’t had to use them since I started using the Sonicare, I dropped my last one from a great height and it stopped making the waves but only the noise, that was about 3.5 years old