The Philips Sonicare DiamondClean 9400 electric sonic toothbrush with app HX9917/88 ensures whiter teeth while simultaneously improving oral health. With the A3 Premium All-in-One brush head featuring angled bristles, it allows for thorough plaque removal, even in hard-to-reach areas. Thanks to its triangular tips, the sonic toothbrush also eliminates stains for a radiant smile. Offering four brushing programs and three intensity levels, it provides a personalized brushing experience. To prevent excessive pressure, the Philips Sonicare DiamondClean 9400 is equipped with 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 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.
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 |
Manufacturer | Philips Sonicare |
Category | Electric toothbrush |
Manufacturer no. | HX9917/88 |
Release date | 3.8.2021 |
Sales rank in Category Electric toothbrush | 21 of 931 |
External links | |
May include power adapter | No |
Colour | White |
Exact colour description | White |
Target group | Adults |
Toothbrush type | Sonic toothbrush |
Equipment + Functions | App supports, Bluetooth, Charge level indicator, Display, Print feedback, Timer |
Cleaning programme | Daily clean, Deep clean, Gum massage, Whitening |
Number of levels | 4 x |
Manufacturing technology | Sonicare technology |
Country of origin | China |
Manufacturer commitment | RE100, SBTi |
Manufacturer compensation | According to RE100, the manufacturer Philips Sonicare fully compensates for its energy consumption, leading to a reduction in emissions. |
CO₂-Emission | |
Climate contribution |
Model number | HX9917/89 |
Power supply | Rechargeable battery operated |
Battery life | 336 h |
Charging variant | Travel pouch |
Battery type | Li-ion |
Battery size | Device specific |
Items per sales unit | 1 x |
Number of brush heads | 2 x |
Scope of delivery | 1 x Sonicare Diamond Clean Smart 9400, 1x charging glass, 1x handle, 1x USB travel charging case, 2x brush heads (A3 Premium All-in-One and G3 Premium Gum Care) |
Length | 17 cm |
Width | 11 cm |
Height | 25.50 cm |
Weight | 1053 g |
Length | 26.60 cm |
Width | 17.80 cm |
Height | 11.30 cm |
Weight | 1.07 kg |
| URL | https://www.philips.ch/c-w/aktionen/GZG.html |
| Valid from | 6.11.2024 |
| Ends | 31.12.2025 |
| Closing date | 31.12.2025 |
How often does a product of this brand in the «Electric toothbrush» category have a defect within the first 24 months?
Source: Digitec GalaxusHow 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: Digitec GalaxusHow often is a product of this brand in the «Electric toothbrush» category returned?
Source: Digitec Galaxus
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.
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...
