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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: #19,183 in Health & Household (See Top 100 in Health & Household) #42 in Sonic Toothbrushes
Customer Reviews: 4.4 4.4 out of 5 stars (990) 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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Original price was: $229.99.$214.63Current price is: $214.63.

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!
Ron –
Phillips Sonicare 9300
This is a very good product recommended by my dental team. It is very easy to use and makes my teeth feel very clean after each use. It is ergonomically designed and fits well with my bathroom’s decor. Good job Sonicare!
jck –
Phillips Sonic care diamond tooth brush
Fantastic tooth brush!! I love it my teeth are so much whiter
Lee2309 –
Wonderful toothbrush
I love them. I’ve had it since I’ve had one since they were invented.
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!
L. Klein –
Great performance, questionable durability
I love this toothbrush, but it keeps breaking every 2-3 years. I keep ordering new ones because I’m addicted to the fresh-from-the-dentist feeling of clean. I feel bad because each time I throw away a bunch of accessories I don’t need because they last a lot longer than the toothbrush itself.
Dennis Peace –
Dentist clean.
Was using the diamondclean classic, this version is totally different. The high intensity gets your teeth clean feeling like after the dentist. It’s pricey but we’ll worth it.
ak –
Best Investment EVER
If you don’t use a Sonic Care toothbrush, you are missing out on life. This is the best invention ever. I look forward to brushing my teeth and often brush several times a day (with my favorite toothpaste – Arm & Hammer). I never have plaque or cavities. It’s the BEST!
Paola –
Desde la primer lavada sientes la diferencia
Motion sensor –
Bought it for my husband and he loves it. The app feature is super cool and easy to work with. So nice to have a reminder to switch out the toothbrush heads too.
Daria Stim –
good
Amazon Customer –
Fabulous!I am a smoker and this toothbrush has made that not at all visible on my teeth. Changed my cleanings at dentist from every four months to every six months. WELL WORTH IT!
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.