The Mini Curvy Sonic is the best electric toothbrush for kids because of its small size that fits perfectly on little kids hands and the angled brush heads that are made of the finest Dupont Filaments on a wavy shape made to contour kid's teeth and massage their gums. * Dupont Filaments * Patented Angled Brush Head (1 included) * 2 modes (normal, soft) * 28,000 sonic pulse/minute * 1-AAA Battery operated (included) * Small size handle * Waterproof * 1-year warranty