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Philips Sonicare DiamondClean Smart 9400Rechargeable Toothbrush
No. 1 Dental professional reccomended sonic toothbrush brand worldwide1
Gently removes up to 20 x more plaque*
Complete care for your oral health
20 x more plaque removal*
Up to 15 x healthier gums**
Visual pressure sensor
4 modes and 3 intensities
20 x more effective on plaque*, gentle on gums
Everyone cleans differently, so we designed this brush head with multi-angle bristles to keep plaque removal on course no matter your technique. Our All-in-One A3 brush head delivers our best cleaning and removes up to 20 x more plaque, 15 x healthier gums in six weeks and up to 100% more stain removal in less than two days versus a manual toothbrush.
Sonicare Fluid Action
Philips Sonicare toothbrushes clean gently yet effectively and care for your teeth and gums with 62,000 bristle movements per minute. Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline.
Help protect your gums with our pressure sensor
This Sonicare electric toothbrush has a light ring at its base that gently lets you know if you're overdoing the pressure. Simply ease off when it lights up to help your gums stay protected.
Technical specifications
Parts & Accessories
- CP1205/01
- Black
- UK specific
- Cord length: 95 cm
- 2 pin
- Charge with stand or glass
- HX9052/33
- Up to 10x more plaque removal
- Up to 7x healthier gums
- Medium Soft Bristle
- Compatible with all Sonicare handles except Philips One and Kids
- HX9054/17
- Up to 10x more plaque removal
- Up to 7x healthier gums
- Medium Soft Bristle
- Compatible with all Sonicare handles except Philips One and Kids
- HX9054/33
- Up to 10x more plaque removal
- Up to 7x healthier gums
- Medium Soft Bristle
- Compatible with all Sonicare handles except Philips One and Kids
- HX6052/07
- 2 pack
- Standard size
- Click-on
- For sensitive teeth and gums
Reviews
4.4
of 5
379
Reviews
87%
recommend this product
JJ86JV
12/08/2026
United Kingdom
Verified buyer
I love Sonicare toothbrushes and this one’s the be
This is absolutely the best Philips Sonicare toothbrush I have had. And it’s my 3rd one in over 10 years. Paired with their premium heads, my teeth never felt better and cleaner.
Pros
Looks awesome, cleans even better
Cons
None
Yes, I recommend this product
This review was made for DiamondClean Smart 9400 HX9918/89 Rechargeable Toothbrush
Date of Use 2026-07-12
Yes, I recommend this product
This review was made for DiamondClean Smart 9400 HX9918/89 Rechargeable Toothbrush
Date of Use 2026-07-12
Mr Happy chappy
17/10/2024
United Kingdom
Exceptional.. it's just better than the rest
I've used The 9400 edition for over 2 years (hx9917) it just does a great job. I recall it took a while for me to get used to the higher frequency vibrations on my teeth. But don't notice it any more. I unfortunately my unit did break which was replaced free of charge under my after care. Yay.. but whilst I was waiting for the replacement I have to go back to an older oral b brush I had.. only at this point did I truly appreciate the difference and superiority of this sonicare brush.. thank you philips.. customer for life
Pros
Exceptional clean, well made, excellent battery life
Cons
Takes a while to get used to brushing your teeth differently and for me at leaste the higher frequency vibration
Yes, I recommend this product
This review was made for DiamondClean Smart 9400 HX9918/89 Rechargeable Toothbrush
Yes, I recommend this product
This review was made for DiamondClean Smart 9400 HX9918/89 Rechargeable Toothbrush
MurmureA12
19/01/2022
United Kingdom
Verified buyer
Review
Nice product, just go for it!!!!!!!!!!!!!!!!!!!!!!
Yes, I recommend this product
This review was made for DiamondClean Smart HX9903/13 Sonic electric toothbrush with app
Yes, I recommend this product
This review was made for DiamondClean Smart HX9903/13 Sonic electric toothbrush with app
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- News on product launches and tips for healthy lifestyles.
Based on a study of over 2600 dental professionals (dentists and hygienists) conducted in the United States, Canada, China, France, Germany, Italy, Japan, Korea, the Netherlands, Switzerland, Spain, Sweden and the United Kingdom in 2023-2024.
vs. a manual toothbrush.
in 6 weeks vs. a manual toothbrush.
in less than 2 days vs. a manual toothbrush.