An electric toothbrush is a battery-operated device designed to clean teeth more effectively than a manual toothbrush. It features a rotating or vibrating brush head that helps remove plaque and food particles. Many models come with built-in timers to ensure users brush for the recommended two minutes. These toothbrushes often include various settings for different needs, such as sensitive teeth or gum care. Some electric toothbrushes also have pressure sensors to prevent excessive brushing force, which can harm gums. Overall, they are popular for their convenience and ability to promote better oral hygiene.