Electric toothbrushes help prevent periodontitis and alveolar pyorrhea by removing plaque more efficiently than manually brushing. As electronic toothbrushes have become more popular recently, the HT-B470 was designed to address a variety of user needs that have emerged. It eliminates any worry of the battery dying in the middle of brushing with a red flashing light to alert you when the battery is low. HT-B470’s completely waterproof design and sleek shape make it extremely easy to use and rinse so that it will always stay clean.