Philips Sonicare DiamondClean Smart HX9911/66

Superior Plaque Removal and Versatile Features for Discerning Users

Achieve a Superior Brushing Experience

The DiamondClean Smart is a high-performance electric toothbrush designed to deliver superior oral care. (Image: A woman demonstrating the use of the Philips Sonicare DiamondClean Smart toothbrush.)

Model Number: HX9911/66

(Image: Product shot of the Philips Sonicare DiamondClean Smart toothbrush, including handle, charging glass, and base.)

Brushing Made Easier

Ideal Brushing Experience

Designed for an optimal brushing experience.

Features a pressure sensor that alerts you when you apply too much force. ?

Includes a progress report for tracking your brushing habits.

Designed for Your Lifestyle

A statement piece for your bathroom.

Offers up to 14 days of regular brushing on a single charge. ?

The brush head replacement reminder ensures you maintain optimal brushing quality. ⚙️

The Superior Sonicare Experience

Up to 20x more plaque removal* and gentler on gums. ✔️

Experience Sonicare's signature AirFloss action.

Key Features

Best Choice for Plaque Removal

Philips developed brush heads with multi-angle bristles to effectively remove plaque, regardless of your brushing technique. The A3 All-in-One brush head provides the highest level of brushing power, removing up to 20x more plaque, improving gum health by up to 15x in 6 weeks, and removing up to 2x more stains in less than 2 days compared to manual brushing.

Sonicare AirFloss Action

Philips Sonicare toothbrushes deliver 31,000 brush strokes per minute, cleaning teeth and gums effectively and gently. The Sonicare AirFloss action injects liquid deep into interdental spaces and along the gumline to support brushing.

Pressure Sensor Alerts You Visually

A light ring on the brush handle illuminates when you press too hard. By reducing pressure when the light ring is on, you can minimize the risk of damaging your teeth and gums. (Image: Close-up of the toothbrush handle showing the purple light ring.)

Modes and Intensity Settings

With 12 brushing settings (4 modes x 3 intensities), you can enhance your oral care. This electric toothbrush is ideal for those who want a thorough clean or a personalized brushing method. Choose from Clean, White+, Gum Health, and Deep Clean+ modes, and adjust the intensity across three levels to suit your preference. (Image: Visual representation of modes and intensity levels.)

Premium Design and Accessories

This electric toothbrush boasts a refined, slim design, including a charging stand, meticulously crafted by Philips designers and engineers.

Brush Head Replacement Reminder

Brush heads lose effectiveness after three months. Dental professionals recommend regular replacement. Philips Sonicare toothbrushes feature a replacement reminder that tracks your brushing frequency and intensity, notifying you when it's time to change your brush head. (Image: Icons representing brush heads with a notification symbol.)

14-Day Battery Life

Enjoy up to 14 days of regular brushing on a single charge*. This makes developing good brushing habits more convenient. (*Based on brushing for 2 minutes, twice a day.) (Image: Hand holding the sleek Sonicare toothbrush handle.)

Progress Report

Internal sensors alert you if you apply too much pressure. By connecting to the Sonicare app, you can record and review your brushing habits, such as pressure, supporting your oral health between dental visits. (Image: Smartphone screen displaying the Sonicare app interface with brushing data.)

Specifications