The number of bristles has increased from 768 in the third generation to 1908, designed to help clean teeth and provide a gentle gum massage. The toothbrush features an added brush head for enhanced cleaning performance. It offers four one-touch modes: A. Powerful mode for deep cleaning; B. Moderate mode for comfortable daily brushing; C. Gum care mode to gently stimulate gums; D. Whitening mode to help maintain a brighter smile. The U-shaped design allows for easy usesimply bite down gently and move the brush side to side to help clean teeth from multiple angles. The vibrating bristles work to help remove plaque along the front surfaces of the teeth. Designed for convenience, this electric toothbrush can be used while performing other morning routines. The hands-free experience is especially convenient when using the whitening mode. Package includes: 1 electric toothbrush