Search  for anything...

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

  • Based on 2,128 reviews
Condition: New
Checking for the best price...
$423.99 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 6 left in stock, order soon!
Fulfilled by CASTLE (free shipping in most states)

Arrives Saturday, Jun 6
Order within 22 hours and 7 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

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%.

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: #101,018 in Health & Household (See Top 100 in Health & Household) #162 in Sonic Toothbrushes


#162 in Sonic Toothbrushes:


Customer Reviews: 4.4 4.4 out of 5 stars (2,128)


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


Manufacturer Part Number: MAIN-41350


Model Number: HX9957/51


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: 3.19 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: Saturday, Jun 6

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • 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

  • 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

  • Gets your teeth really really clean
Size: 1 Count (Pack of 1) Color: New Rose Gold
I have used Sonicare Brushes for many years. I liked my older one, but I thought maybe a new one would be even better. This one made the old one seem like a basic toothbrush. If you have not upgraded in a few years, getting this brush can feel like a game changer. I recall that with my first Sonicare brush, there was a period of adjustment while I felt the brush gave me a strange sensation. With my second, it was not significantly stronger, so I did not notice a period of adjustment. This brush is significantly more powerful. Even though I was used to a Sonicare brush, there was a significant period of adjustment. It took almost 2 weeks to get used to it. I have been using the Deep Clean + setting. My teeth are getting cleaner and whiter, my gums are improving. Those promises are true. While this brush has a Tongue Cleaning setting, I did not feel that the features of this brush were truly necessary for this purpose. Also, I did not feel like swapping brush heads, each time I brushed, just to clean my tongue. I elected to put the tongue cleaning head on my old brush and just use that for this cleaning purpose. I suppose if I travel, I would just bring the new diamond clean brush for both purposes. Now for the not quite so good. The connection between the brush and the app is not all that stable. I cannot tell if this is the brush, the app or my phone. For deep clean, you need to do 2x 2 minute sessions to complete the clean. Slightly more than 50% of the time, the app registers the first cycle, but fails to transition to the second cycle to complete the cleaning session. On the second 2 minute session, it lets you know you only did half the cleaning, and prompts you to perform another 2 minute session to finish. This is VERY frustrating, especially when it happens more than once a day. Sometimes (about 3 times a week), the phone and brush refuses to connect. The app suggests that you turn BlueTooth off and then on to establish a connection. This has NEVER worked. I find the only solution that does work is to take 5 minutes to reboot my phone, and let everything start back up again. I find myself pondering if it is really important to me to reboot my phone just to brush my teeth. Also that 5 minute delay can be very impactful to a busy routine. Sonicare, if you are reading this, I do feel you can do better. Sonicare seems to have a strange model/pricing scheme. they have a basic brush, next tier, they add something you want. Then next tier, they add something else you want, but take the first thing away. If you want multiple additional features, you quickly find yourself shopping for a brush that is significantly more expensive than what you were originally looking at. I suppose it is good for their profit, but shopping for a brush can be an exercise in frustration. Summary: Pros -Does it's job really well -Comes with a travel case, and provides USB Charging for the brush, so you don't need to take the stand -Does an excelent job coaching you to improve technique -Coaches you to brush 2x a day, floss etc. All those things your dentist nags you to do, but you forget once you get home Cons -Connection issues with app -Expensive -Hard to find a brush with all the features that are important to you ... show more
Reviewed in the United States on March 22, 2024 by jfb9301

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...