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Grey electric toothbrush with charging glass and travel case

Sonicare

Sonicare DiamondClean Smart 9300 HX9903/45 oral care

SKU CH-2DQE-V6SNN MPN HX9903/45

Rechargeable sonic electric toothbrush with four brushing modes, three intensity levels, pressure sensor and app connectivity for personalised guidance, supplied with two premium brush heads.

  • Accessories includedWhat's in the Box: 1x DiamondClean Smart 9300 sonic electric
  • Product colorGrey
  • Product typeElectric Toothbrush
  • Key featuresThe DiamondClean Smart provides a deep clean for a whiter, h

Color Gray

  • Up to 20x more plaque removal with A3 Premium All-in-One brush head
  • Up to 15x healthier gums in two weeks using longer bristles
  • Up to 100% more stains removed in less than two days via triangular tips
  • Four brushing modes and three intensity levels let you personalise every session
  • Pressure-sensor light ring flashes to protect teeth and gums from excess force

Smart sonic toothbrush for daily oral care

The Philips Sonicare DiamondClean Smart 9300 delivers advanced sonic cleaning with four brushing modes and three intensity levels. It includes an A3 Premium All-in-One brush head and a C3 Premium Plaque Control head. The handle connects to the Philips Sonicare app for personalized guidance. This electric toothbrush suits adults who want app-connected feedback and multiple cleaning options for a complete routine.

Consistent cleaning with pressure protection

The light ring on the handle flashes when excessive pressure is detected, helping you maintain a safe technique throughout the full brushing session. Smart Sensor technology tracks coverage and duration in real time. Brush head detection automatically selects the optimal mode and intensity for the attached head. These features work together to sustain effective cleaning without relying on short bursts of effort.

Premium accessories for home and travel

A charging glass and stand provide a stable, water-resistant dock for the rechargeable handle. The included travel case protects the brush and heads during transport. Two premium brush heads are supplied: the A3 for all-in-one care and the C3 for focused plaque control. The grey finish resists visible wear. Buyers who need a built-in UV sanitiser or additional specialised heads should consider other models.

How it compares

Measured against everything we stock in Dental Care & Oral Hygiene, at today’s prices. Recalculated every night.

Price $191.99
Pricier than about 95% of the 2,485 comparable items (median $20.99).

Specifications

Product
Brand nameSonicare
Model nameHX9903/45
Product colorGrey
Product typeElectric Toothbrush
Power
Rechargeable batteryYes
Size & build
Shipping weight3.52 kg
Package size229 × 152 × 51 mm
In the box
Accessories includedWhat's in the Box:
1x DiamondClean Smart 9300 sonic electric toothbrush, 1x A3 Premium All-in-One brush head, 1x C3 Premium Plaque Control brush head, 1x charging glass and stand, 1x travel case

Other versions of this model

4 more in the same range

Questions about this item

How loud is the DiamondClean Smart 9300 during daily use?

The sonic electric toothbrush runs quietly enough for early-morning brushing; the light ring flashes instead of sounding an alarm when pressure is too high.

What must I already own to use the app guidance on the HX9903/45?

A compatible smartphone with Bluetooth and the Philips Sonicare app installed are required for real-time coaching.

Will the A3 Premium All-in-One and C3 Premium Plaque Control heads fit my older Sonicare handle?

Yes, both included brush heads use the standard click-on design that fits most Sonicare rechargeable handles.

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