Philips Sonicare DiamondClean Smart 9400

Sonic toothbrush
Price in EUR including VAT, free shipping
Delivered between Sat, 15/3 and Tue, 25/3
6 items in stock at supplier

Colour

Product details

The Philips Sonicare DiamondClean 9400 electric sonic toothbrush with app HX9917/88 ensures whiter teeth while simultaneously improving oral health. Its A3 Premium All-in-One brush head with angled bristles allows for thorough plaque removal, even in hard-to-reach areas. Additionally, the triangular tips help eliminate stains for a radiant smile. With four brushing programs and three intensity levels, it offers a personalized brushing experience. To prevent excessive pressure, the Philips Sonicare DiamondClean 9400 features a pressure sensor.

All-in-One brush head for comprehensive care.

Brushing as usual - 20 times more effective with the A3 brush head and 10 times more effective with the G3 brush head compared to a manual toothbrush.

Up to 7 times healthier gums in just 2 weeks.

Customize the DiamondClean 9400 to suit your needs.

The BrushSync technology automatically selects the best brushing program for you and alerts you when you are applying too much pressure.

Included: 1x HX9917/88, 1x All-in-One Premium brush head, 1x G3 Premium Gum Care, 1x charging glass, 1x USB travel charging case.

Key specifications

Target group
Adults
Number of levels
4 x
Power supply
Rechargeable battery operated
Battery life
336 h
Exact colour description
White
Toothbrush type
Sonic toothbrush
Item number
18233310

General information

Manufacturer
Category
Manufacturer no.
HX9917/88
Release date
3.8.2021

Colour

Colour group
White
Exact colour description
White

Electric toothbrush properties

Target group
Adults
Toothbrush type
Sonic toothbrush
Equipment and equipment
Timer
Cleaning programme
Daily clean
Deep clean
Gum massage
Whitening
Number of levels
4 x

Origin

Country of origin
China

Sustainability

Manufacturer commitment
RE100
SBTi

Model

Model number
HX9917/89

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
2 x
Scope of delivery
1x charging glass
1x handle
1x Sonicare Diamond Clean Smart 9300
1x USB travel charging case
2x brush heads (A3 Premium All-in-One and G3 Premium Gum Care)

Product dimensions

Length
17 cm
Width
11 cm
Height
25.50 cm
Weight
1053 g

Package dimensions

Length
25.70 cm
Width
19.20 cm
Height
11 cm
Weight
1.05 kg

Legal Notice

Product Safety

Here you can see the lowest price of the day over time. Learn more













14-day cancellation right
30-day right of return if unopened
Return policy
24 Months Statutory warrantyGuarantee provisions

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
  • 10.Oclean
    3,8 %
  • 11.happybrush
    4,1 %
  • 12.Philips Sonicare
    4,2 %
  • 13.Ailoria
    5,9 %
  • 14.Philips
    7,4 %

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
  • 9.Braun
    2 days
  • 9.Oral-B
    2 days
  • 9.Philips Sonicare
    2 days
  • 12.happybrush
    3 days
  • 12.Oclean
    3 days

Return rate

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

Source: Galaxus
  • 3.Innogio
    0,5 %
  • 5.Fairywill
    0,6 %
  • 5.Philips Sonicare
    0,6 %
  • 7.Laifen
    0,8 %
  • 8.Ailoria
    0,9 %

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...