Philips Sonicare 2100 Prestige Toothbrush Black-HX4021/02 is a rechargeable sonic electric toothbrush designed to provide effective everyday cleaning with gentle sonic technology.

Benefits:
- Helps remove plaque effectively.
- Supports healthy teeth and gums.
- Provides gentle sonic cleaning.
- Built-in timer encourages proper brushing time.
- Easy and comfortable for daily use.

Main Components & Their Benefits:
- Sonic Technology: Creates rapid brushing movements for effective cleaning.
- Brush Head: Helps clean tooth surfaces and along the gumline.
- Built-In Timer: Helps ensure the recommended brushing duration.
- Rechargeable Battery: Provides convenient cordless use.

Precautions:
- For oral use only.
- Do not use a damaged brush head.
- Replace the brush head regularly or when bristles become worn.
- Keep the charger away from water.
- Children should use under adult supervision.

- Wet the brush head and apply toothpaste.
- Place the bristles against the teeth and turn on the toothbrush.
- Guide gently across all tooth surfaces for 2 minutes.
- Rinse the brush head thoroughly after use.