Philips Sonicare 4100 series 4100 Series HX3681/33 Sonic electric toothbrush

The Philips Sonic toothbrush 4100 Series HX3681/33 is an electric sonic toothbrush for adults designed to support everyday oral hygiene. It features sonic technology and a brush action that helps remove surface stains and contribute to whiter-looking teeth with regular use. The set includes one handle and one brush head and is powered by a built-in lithium-ion battery. The product offers daily care and sensitive brushing modes and is finished in white.

Advantages

Sonic technology combined with the brush action gently reduces stains on tooth surfaces while maintaining a comfortable brushing experience. The integrated timer supports recommended brushing duration, and the rechargeable lithium-ion battery provides reliable runtime. Two brushing modes — Daily care and Sensitive — allow adaptation to different needs.

Suitable for

• Adults seeking a replacement for a manual toothbrush
• Users who want a gentle mode for sensitive teeth
• People who prefer sonic cleaning for stain removal and daily maintenance

Key specifications

• Model: Philips 4100 Series HX3681/33
• Power source: Built-in lithium-ion battery
• Brushing modes: Sensitive, Daily care
• Integrated timer: Yes
• Adjustable speed: Yes
• Colour: White
• Package contents: 1 handle, 1 brush head

How to use

Attach the brush head to the handle, wet the bristles and apply a pea-sized amount of toothpaste. Turn on the toothbrush and select the appropriate mode (Daily care or Sensitive). Move the brush slowly from tooth to tooth, letting the sonic action work without applying excessive pressure. Follow the integrated timer to ensure adequate brushing time, and recharge the handle as needed.

Recommendations

Use twice daily for best results and replace the brush head every three months or sooner if bristles show wear. Consult a dental professional for personalised advice, especially if you have specific dental conditions.