Philips Sonicare DiamondClean Smart 9700 Rechargeable Electric Power Toothbrush, Lunar Blue, HX9957/51
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Availability:
Only 3 left in stock, order soon!
Arrives
Wednesday, Nov 4
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Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
Features
- Philips Sonicare's best ever toothbrush for the most exceptional clean and complete care
- Removes up to 10x more plaque and improves gum health up to 7x in just 2 weeks (in gum health mode vs. a manual toothbrush)
- Removes up to 100% more stains in just 3 days (in white+ mode vs. a manual toothbrush)
- 4 different smart brush head types automatically pair with the appropriate brushing mode and smart sensors provide real time feedback
- 5 modes: Clean, White+, Deep Clean+, Gum Health, TongueCare & 3 intensity levels
Description
Get the ultimate and most complete care with DiamondClean Smart. Eliminate guesswork with real time feedback and personalized coaching so you can improve your technique and achieve 100% confidence in your oral care. It's more than just a toothbrush - it's a complete oral care solution. Featuring Sonic technology, 5 brushing modes and smart brush head mode pairing technology, the Philips Sonicare DiamondClean Smart Rechargeable toothbrush delivers superior plaque removal, gum health and whitening performance. Philips Sonicare DiamondClean Smart goes beyond traditional cleaning to deliver up to 10x more plaque removal, removes 100% more stains in just 3 days and improve Gum Health up to 7x in just 2 weeks . It also features a visual pressure sensor to alert you when you are brushing too hard. Customize your brushing experience using the 5 different modes and 3 intensity settings and know when to replace your brush head via a customized reminder. An elegant charging glass can be used for charging or rinsing your mouth after brushing. A USB charging travel is also included to charge your toothbrush on the go. vs. a manual toothbrush vs. a manual toothbrush in white+ mode vs. a manual toothbrush in Gum Health mode. Subscribe & Save on genuine Philips Sonicare brush head replacements and save up to 15%.
Product Dimensions : 4.72 x 9.29 x 10.23 inches; 3.19 pounds
Item model number : HX9957/51
Batteries : 1 A batteries required. (included)
Date First Available : March 26, 2017
Manufacturer : Philips Oral Healthcare
Best Sellers Rank: #124,554 in Health & Household (See Top 100 in Health & Household) #184 in Sonic Toothbrushes
#184 in Sonic Toothbrushes:
Customer Reviews: 4.3 4.3 out of 5 stars (2,143)
Brand Name: Philips Sonicare
Age Range Description: Adult
Included Components: Travel Case
Model Name: 9700
Target Audience: Unisex-Adults
Package Type Name: Box
Manufacturer: Philips Oral Healthcare
UPC: 075020064516
Model Number: HX9957/51
Manufacturer Part Number: MAIN-41350
Other Special Features of the Product: Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic
Power Source: Battery Powered
Item Firmness Description: Soft
Toothbrush Head Shape: Oval
Operation Mode: Electric
Number of settings: 5
Mount Motion: Vibrate
Number of Items: 1
Unit Count: 1 Count
Number of Pieces: 1
Item Dimensions: 4.72 x 9.29 x 10.23 inches
Item Weight: 3.2 pounds
Material Features: food is safe
Bristle Material: Nylon
Handle Material: Plastic
Color: Old Lunar Blue
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 4
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 7 Count (Pack of 1)
Color: New Lunar Blue
Excellent toothbrush in a pretty lunar blue color. Includes 6 brush heads. Smart brush heads tell you when they need to be replaced. The smart brush heads clean well - l could really feel the difference. Has an app, but I don't think it's really that necessary if you're already brushing carefully. FYI, Phillips supposedly will send you a free brush head and extend the warranty another 6 months when you register. However, their coupon expired in 2025!
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Reviewed in the United States on August 20, 2026 by Brian
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
First off let me say that after growing up in the 90's the thought of spending $300 on a toothbrush is absolutely ridiculous - until I bought one. The day I received it in the mail, I couldn't wait to get it out and use it for the first time. I had never used a toothbrush like this one before. I usually used the cheaper $10.00 battery powered toothbrushes that you throw away once its depleted. The directions recommend you to let it charge for a full 24 hours prior to using it - however in my case I had already thrown my toothbrush in the trash, and the excitement of the product forced me to use it immediately. When I opened up the package, I was quite surprised of the quality of not only the packing, but the classy display of the contents and the quality of the materials. I picked the toothbrush up - Wow! Never thought I'd be saying this, but "What a beautiful toothbrush" is exactly what I said. The different brush heads are packaged nicely in their separate "baggies". I got the charging base and glass cup out of the packaging, and set it up like the directions say. I set my toothbrush in it and voila! The brush beeps/vibrates twice to let me know it is charging. The battery indicator blinks when the unit is charging. Just like the description says, you get several brush heads: Whitening, Clean/Deep Clean, Gum Care, and one tongue brush. Each brush head is marked on the front of the neck which one it is (C - For Clean) (W - for whitening) and (G - for gum care). If you still aren't sure you can always just place the brush head on the toothbrush and it'll "magically" tell you which one you're planning to use. Another neat thing I noticed is each brush head (that comes in the package) has a microchip, so not only does the toothbrush know which one you're using, it also knows the best intensity and vibration pattern to use which cooresponds with each head. Granted you can change it up anytime you like during the process (brush cycle prior to brushing, intensity while you're brushing), but I thought it was an ingenious idea for it to be this smart. I got the app downloaded, set up my profile, and was ready to brush. I picked the toothbrush up out of the glass - immediately it lights up. I place the "Clean" brush head on it, and the app automatically switches to the "clean" mode and opens up the brush screen - all without me lifting a finger (granted this only works if the app is already open prior to picking up the brush or turning it on). So I turn it on, the app starts telling me the parts of my mouth to brush, and I go to work. The feeling of using this toothbrush vs what I was used to definitely was an awkward feeling - yet it was quite pleasant. I finish the cycle, and then the app proceeds to tell me areas of my mouth I didn't brush as good. It says "Turn on your brush to touch up". I push the Botton and brush exactly where it tells me to. Once the cycle is finished it tells me I did a fabulous job. It reminds me to rinse, floss, and use mouthwash. I've been using this toothbrush for almost a week now and I can already say I'm in love with this thing. My teeth feel as if I've just left the dentist's office. They're already several shades whiter. I'm in love! I will never own anything else other than this toothbrush.
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Reviewed in the United States on November 19, 2017 by Brad Huggins
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
I was a non-believer in electric brushes. I never thought they would do very good compared to just using a regular toothbrush. I didn’t know what to buy so I figured that I would take a chance and go all out. If I wanted one, I wanted to ensure I got a good one for a good experience of how it should be. And not settling for something cheap that would continue keeping me a non-believer. I love this brush. While I have no experienced other brands or types, I know for sure that it is doing a darn good job of cleaning my teeth. Feels clean, feels good, and does not feel uncomfortable at all. My first experience with it was during travel. The case is excellent and convenient with a USB to charge and can be secured in the case. The standard charger for home use is very nice and the glass is very sturdy (if I break it, it’s because I got careless with it). Battery life seems to be more than enough to go for quite a while without a charge. But that should not be an issue anyway with having 2 ways to charge it. The app itself is quite simple (kind of disappointing between what I expected and what it does). How it works is that the app defines the range of teeth in quadrants. Top left, bottom right, inner, outer, etc. it does not know which tooth you are currently brushing or for that matter, which quadrant you are brushing. It merely knows whether you are brushing the inner or outer part of your teeth (the handle seems to know if the brush is on the inner or outer part of your teeth). So while not what I expected, it’s still effective enough to ensure you have fully brushed all areas of your teeth. But the app cannot determine if you are brushing the left or right side of your mouth. It is expecting that you are following it’s instruction. You don’t need to use the app. But I would recommend starting with it. Because depending on the setting, the handle gives an audible buzz that tells you to switch areas. And if you do not know what or where that means you should go next to brush, you cannot define what it is telling you to do. It even recommends which brush type to use based on your settings. Overall though, my first experience with my first electric brush being this particular brand and model has changed my way of brushing. And unless something goes wrong between now and next few years or so using it, I’m sold on this and do not even need to try another.
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Reviewed in the United States on June 24, 2019 by Ray
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
I decided to buy an expensive toothbrush after reading all of the things that it included. I had a Philips Sonicare before, but after many years it died. This toothbrush is very expensive but worth every penny! I now have a little “competition” with myself to finish all of the tasks that my sonic toothbrush app has me do twice a day. It keeps me on track asking if I have flossed, rinsed and scraped my tongue (it’s asks this after I have brushed my teeth as “reminders”). I love that it prompts when to move to the next section. I REALLY love that I can see on the app where I haven’t cleaned enough in one section and has me go back to clean that area. My teeth have had significant improvement in just 1 week of ownership and using it twice a day. I use the Clean brush head in the morning and use the White+ brush head in the evening. Tongue scraping brush head twice a day. The toothbrush design is sleek. I love the travel case and it was recently used on a vacation. The only “downside” was that the travel case included space for two brush heads but not the tongue scraper too. Given the toothbrush app has you floss, brush, rinse and scrape twice a day, if going on vacation, the travel case should have enough space for 3 brush heads. One of the goals Philips Sonicare has you set (if you want) is to have a whiter smile thus using a different brush head then the normal Clean mode and needing space for 3 brush heads. I have a teeth cleaning at my dentist today and I’m interested to see if I get a better report card on this visit than previous visits. Haha
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Reviewed in the United States on May 27, 2020 by K Anderson
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
This is the nicest toothbrush I’ve ever owned and it should be for the price. The problem is that the high price seems related to its status as a “smart” toothbrush, which it really is not. The app for this device is mediocre at best. This toothbrush is app driven but the app itself could be more flexible. First, sometimes I’m in a rush and I don’t always have time to use the app. When the app is not in use, I feel that the toothbrush should revert to the “traditional” 30 second timer for each quadrant. Second is with the app’s flexibility. I have always brushed the entire top front uppers, then moved to top inner teeth. I then repeated for the bottom teeth. This app forces me to brush six discrete areas. I’m used to it now, but it still annoys me that I can’t brush the way I’m used to. Update: As nearly as I can tell - this is a very effective toothbrush. But... the app, while potentially very useful forces me to brush the same spots over again. I think this might have to do with however the app/brush determines where the brush-head is in your mouth. I’m fairly confident to say that it knows in which quadrant you are, but I think it gets “confused and is not always sure if you are working the inside or outside of that quadrant. My biggest complaint is the availability of brush heads, specifically the T1 tongue brush in black. Mine “expired” and Amazon does not and hasn’t had them in stock for some time. I called Phillips directly and was sent two white (I agreed to that) “dumb” heads that do not connect to either the brush or app. Phillips customer service is awful. Again, I’m sure that this is a fine brush, but you pay a premium for their app and top of the line connected brushes. It is a holistic package, but it falls short if you can’t get replacement brush heads. When this brush goes, I certainly will not be getting this, their top of the line model. I’ll have to knock down my rating for this product.
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Reviewed in the United States on April 1, 2019 by Michael P. Davis
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
Some 5 years ago, I went to the dentist one day and discovered I had a lot of cavities all of a sudden. After having the cavities corrected and receiving fillings in numerous teeth, I decided to embark on a journey and do everything I could to ensure that I would prevent getting cavities in the future. I had been brushing at least twice a day, but I had not been flossing regularly or doing anything else. I started flossing and using fluoride mouthwash after my routine. One thing I kept putting off was buying an electric toothbrush. I had read conflicting information about whether or not it made a difference. All through this time span, I had been using Oral-B Pulsar vibrating manual toothbrushes. I could not conceive how a Sonicare toothbrush would provide THAT much of a difference. After all, I was used to having a really clean mouth every night and morning with my flossing, brushing and rinsing routine I had developed. For years I couldn't justify the expense of buying a toothbrush that costs astronomically more than what I had. After years of debating it back and forth, I finally decided to make the plunge and see what the top of the line model could do. All I can say is that after a week of owning the Sonicare 9700 Diamondclean Smart, all my skepticism and assumptions turned out to be wrong. The results from this brush are simply incredible. Many reviewers have said this, but I'll say it again. Consider how clean your teeth feel after going to the dentist, then think about what it would feel like if there was a notch ABOVE that. This is literally how clean your teeth feel EVERY TIME you use this toothbrush. I'm completely blown away by how good of a job it does. I'm kicking myself for not buying a Sonicare toothbrush sooner. After using this brush just once, my teeth feel glossy in a way that I didn't think was possible. The biggest difference I've noticed is that the facets of my teeth are clean in a way that simply isn't possible to achieve with a manual toothbrush. I didn't know teeth could feel this smooth. If guided properly, the 9700 will polish and remove plaque from all the little nooks and crannies on, in-between and around your teeth. Your gum-line is stimulated and feel "tighter' around your teeth because they are being cleaned so well next to your teeth. It does all of this and with much less effort than a manual brush. Remember, this is after 1 WEEK, of use. Additionally, the 9700 is extraordinary at teaching you how to get the most out of it. The companion smartphone app is comprehensive and can help motivate some folks with goal selection and other wizardry while you brush. In all honesty, this isn't totally necessary, but it's cool that it can do it. The pressure sensor is a great feature and gives me peace of mind that I'm not damaging my gums or enamel with this powerful mechanical device. You might be surprised about how hard you were brushing before versus what is actually appropriate. The inductive charging feature in the glass is convenient. Just make sure you don't break it. There is a secondary dock you can use if that were to happen, though. Many reviewers have complained about not having a place to store brushes; however, they are packaged in plastic bags, so I'm not too concerned. This likely isn't an issue for me because I am not sharing the brush with anyone else, nor am I swapping out different head types in my routine. Your mileage may vary depending on your priorities. I'm eager to see how this brush holds up and what my dentist thinks in a few months. If you've never used an electric toothbrush before, don't wait years like I did. The cost is well worth it.
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Reviewed in the United States on March 11, 2018 by Ohsnapasaurusrex
Size: 1 Count (Pack of 1)
Color: Old Lunar Blue
I've used two older versions of Sonicare toothbrushes in the past and so this is my 3rd one. Why Sonicare as opposed to the competition? I prefer a larger brush head. Here's my cursory review of the flagship Sonicare model that comes bundled with all the extras: The Toothbrush: It works as expected. The number different brush settings is fine for those who would use it (I think those who are prone to be a bit more OCD would use all the settings), though I imagine a good 90% of the rest would just keep it on one setting for most of the time. The handle has a good weight to it, fits well in the hand, and generally brushes pretty darn well! The indicator light that blinks when you are applying too much pressure while brushing is at the end other end of the handle and therefore you'll never see it unless you're directly in front of the mirror. It would have been better if it made an audible sound in addition to the blinking lights. The bundle The premium that you'd pay to buy the 9700 model is the travel case, the extra brush heads, and the training app. Now, I bought this model specifically because I was interested in the training app. So I'll write a bit about that here. It trains you on the basics on how to brush your teeth. It may be that you've been doing it somewhat incorrectly all your life and now here's your chance to have an app monitor your performance- how cool is that! Well, I used it and find that the app does help you with the basics of how long you should brush and which areas you may want to provide more brush coverage. These two factors alone should be enough to offset some of the other things that the app doesn't do quite as well in, right? Well, the app rather new and has enough bugs and other quirky things that make it rather annoying to use for more than just a week or so. In fact, I stopped using the app after about 10 days. I'm sure they will improve the app but for now, I'd hazard a guess and assume that most users will not continue using the app for more than just a few weeks at most. I hope they will improve the app as there's real promise it what it can potentially do. But for now, it has enough design and functional flaws that make it appear more like it's a beta release rather than a product I paid a premium for. I'm sure Philips will continue to improve the app so that it's more usable. The travel charger This was one of the other reasons I paid a premium to purchase this model. However, I must say that the Philips design team must have been asleep when they came up with the design for the charger. A travel charger is meant to be portable and lightweight. This monstrosity weighs three times more than it needs to, is super-bulky, and on top of that, the innards are totally closed in cheap plastic. So a product you'll put in your mouth that gets wet, you're supposed to then stick in a totally enclosed piece of heavy plastic and carry it with you while you travel- just how hygienic is that?? It has a built in charger and as of now, I'd rather carry around the equally poorly designed metal ring base to charge the unit while I travel. Neither of the two options are ideal of course and therefore I hope Philips will reconsider redesigning the terrible travel charger. Would I buy this product again? The answer is yes! I'm certain that Philips will continue to improve the app to make it more usable. Maybe with the next version, they willl have worked out the issues to make it more usable and useful for people to use for more than a week. Also, I hope they come out with a decent travel charging case that is 1) hygientic 2) lightweight 3) not bulky. But for now, it's still the best electric toothbrush around. 5 stars for the toothbrush and -1 star for the poorly designed travel charger and the beta version of the brushing app.
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Reviewed in the United States on December 24, 2017 by JL
Size: 7 Count (Pack of 1)
Color: New Lunar Blue
Amazing product my boyfriend loves it
Reviewed in the United States on September 8, 2026 by Kailey