Philips Sonicare DiamondClean Smart 9400

Sonic toothbrush
Currently out of stock

Product details

Experience the deepest clean with the Philips Sonicare DiamondClean Smart Series 9400. The all-in-one premium brush head adapts perfectly to your teeth and removes up to 20 times more plaque in hard-to-reach areas compared to a manual toothbrush. The three intensity levels and four brushing modes - "Clean," "White+," "Deep Clean+," and "Gum Health" - cover all your oral care needs. The Philips Sonicare app shows how thoroughly you are brushing and provides personalized tips, such as the TouchUp feature that helps you brush missed spots. The smart brush head recognition automatically reminds you to replace the brush head based on usage time and pressure. The pressure sensor alerts you when you are brushing too hard, and seven out of ten users improved their brushing habits thanks to this feature. An integrated scrub sensor ensures that no harmful movements are made, thus improving your technique. Optimize your oral care with the Philips Sonicare DiamondClean Smart and cutting-edge technology.

Advanced sonic toothbrush for improved oral health: removes up to 20 times more plaque compared to a manual toothbrush, up to 15 times healthier gums, and up to 100 percent fewer stains.

Personalized settings - four modes: Clean, White+, Gum Health, DeepClean+; with three intensity levels.

Real-time feedback: The light ring at the end of your handle flashes when too much pressure is applied, and the vibration of your handle decreases. This keeps your teeth and gums protected.

Smart app features: Connect your toothbrush to the Philips Sonicare app and receive personalized cleaning feedback.

Included: 1x DiamondClean Smart electric toothbrush, 4x All-in-One premium brush heads, 1x USB travel charging case, 1x charging glass.

Key specifications

Target group
Adults
Number of levels
3 x
Power supply
Rechargeable battery operated
Battery life
336 h
Exact colour description
Black
Toothbrush type
Sonic toothbrush
Item number
46909879

General information

Manufacturer
Philips Sonicare
Category
Electric toothbrush
Manufacturer no.
HX9918/89
Release date
26/8/2024

Colour

Colour
Black
Exact colour description
Black

Electric toothbrush properties

Target group
Adults
Toothbrush type
Sonic toothbrush
Equipment and equipment
App supportBluetoothBrush change displayPressure sensorTimer
Cleaning programme
Daily cleanDeep cleanGum massageWhitening
Number of levels
3 x

Origin

Country of origin
China

Sustainability

Manufacturer commitment
SBTi

Voluntary climate contribution

CO₂-Emission
Climate contribution

Model

Model number
89HX9918

Power supply

Power supply
Rechargeable battery operated

Battery properties

Battery type
Li-ion
Battery size
Device specific
Battery life
336 h

Scope of delivery

Items per sales unit
1 x
Number of brush heads
4 x
Scope of delivery
1x charging glass1x DiamondClean Smart electric toothbrush1x USB travel charging case4x All-in-One Premium brush head

Product dimensions

Length
11.13 cm
Width
17 cm
Height
2.53 cm
Weight
846 g

Package dimensions

Length
25.90 cm
Width
18 cm
Height
11.80 cm
Weight
1.07 kg

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Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «Electric toothbrush» category have a defect within the first 24 months?

Source: Galaxus
  • 9.Fairywill
    3.2 %
  • 10.Oclean
    3.8 %
  • 11.Philips Sonicare
    4 %
  • 12.happybrush
    4.5 %
  • 13.Ailoria
    5.8 %

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • 7.Xiaomi
    1 day
  • 8.Oral-B
    2 days
  • 8.Philips Sonicare
    2 days
  • 10.Braun
    3 days
  • 10.Curaprox
    3 days

Return rate

How often is a product of this brand in the «Electric toothbrush» category returned?

Source: Galaxus
  • 2.Fairywill
    0.4 %
  • 2.Innogio
    0.4 %
  • 5.Philips Sonicare
    0.6 %
  • 6.Ailoria
    0.8 %
  • 7.Laifen
    0.9 %
Source: Galaxus

Translation: machine translated
Overall ratingVery good86/100
Very good89/100
Haus & Garten Test Logo
Rank 2 out of 14Haus & Garten Test14 elektrische Zahnbürsten im TestReleaseFebruary 2025

The Sonicare app shows whether the cleaning was thorough. With the all-in-one premium brush head, the bristles achieve up to four times more surface contact. The four modes and three intensity levels cover the high care requirements of teeth.

Very good83/100
Rank 1 out of 12Stiftung WarentestElektrische Zahnbürsten im Test - Von Luxus bis SchnäppchenReleaseJanuary 2023

Good all round. The rather expensive brush convinces in all areas. It cleans the teeth well and offers a respectable battery life of 117 minutes. The optical pressure control warns of strong pressure on teeth and gums. Four different cleaning settings, each with three different intensity levels, can be selected...