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Philips Sonicare

Philips Sonicare DiamondClean Smart 9700 Rechargeable Electric Power Toothbrush, Lunar Blue, HX9957/51

  • Based on 2,126 reviews
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Availability: Only 2 left in stock, order soon!
Fulfilled by CASTLE (free shipping in most states)
Arrives Wednesday, Oct 15
Order within 12 hours and 31 minutes
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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%.

Brand: Philips Sonicare


Age Range (Description): Adult


Special Feature: Pressure Sensor,Brushing Timer,Rechargeable,Lightweight,Ergonomic


Power Source: Battery Powered


Item Firmness Description: Soft


Is Discontinued By Manufacturer ‏ : ‎ No


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: #79,491 in Health & Household (See Top 100 in Health & Household) #129 in Sonic Toothbrushes


#129 in Sonic Toothbrushes:


Customer Reviews: 4.4 4.4 out of 5 stars 2,126 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 15

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.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • This is the best Phillips that I have had in 30 years
Size: 1 Count (Pack of 1) Color: New Lunar Blue
This Phillips is a game changer. I have used Phillips for 30 years and enjoy the long battery life, the quality brush heads, the ease of use, and the travel ability even without the charger (never needed in 9 day trip). This 9700 comes with multiple brush heads and the base recognizes each brush head for setting. The app leads the user to complete each brushing with a mouth diagram while the base and app warn if too much pressure or scrubbing occurs. It is not noisy, keeps a record of daily brushing, flossing and rinsing. It is multifunctional, even connecting to my Apple Health. The only drawback it not having the UV brush heads cleaner as in past systems. ... show more
Reviewed in the United States on July 17, 2025 by Tag
    • Treat yourself! I promise you will NOT be disappointed!
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. ... show more
Reviewed in the United States on November 19, 2017 by Brad Huggins
    • How much are your teeth worth?
Size: 1 Count (Pack of 1) Color: Old Lunar Blue
Review Image by Heather Neubaum Heather Neubaum
Review Image by Heather Neubaum Heather Neubaum
Review Image by Heather Neubaum Heather Neubaum
Review Image by Heather Neubaum Heather Neubaum
I’ve already lost most of my teeth due to medications and genetics. I’m trying to keep my remaining teeth as healthy as possible while still being gentle but thorough on my very expensive implants. This is one of the best Sonic toothbrushes I’ve ever owned. It does exactly what I need it to, doesn’t make my gums bleed like others have, and has so many more features that make it a worthwhile purchase. The charger is cute/stylish while still being useful by adding a glass cup to rinse your mouth with. The case is not just sleek and gorgeous, but is high quality and even charges via a USB port that is safely tucked away. No need to bring a bulky charger with me anymore. Now for the reason I chose this one: (it wasn’t just the nice color) it has an app that shows you where you need to focus to get a better clean and how well you are doing. These replacement heads are a bit more expensive, but after paying so much for my implants, I find this to be well worth it. I’m shown how long I should brush which sections, if I’m missing an area in my mouth, if I’m brushing too hard. Over all, if you care about your teeth and don’t want to end up with a mouth full of cavities and fillings or worse: dentures, invest in this toothbrush. ... show more
Reviewed in the United States on April 28, 2022 by Heather Neubaum Heather Neubaum

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