The number of bristles has increased from 768 in the third generation to 1908. To enhance brushing and gum massage, an additional brush head has been included based on external testing. Four one-touch modes: A. Power mode for intensive cleaning; B. Moderate mode for comfortable brushing; C. Gum care mode for gentle gum massage; D. Whitening mode to help remove surface stains. This U-shaped toothbrush is designed for easy use—simply bite down gently and move it side to side to achieve a 360-degree clean. The vibrations work effectively to clean all tooth surfaces. Brush comfortably while multitasking, such as applying makeup or getting dressed. This electric toothbrush helps streamline your morning routine. The whitening mode allows for hands-free operation. Package includes: 1 electric toothbrush