Motivate your little one to maintain their healthy smile with this Philips Philips Sonicare for Kids Bluetooth electric toothbrush.Watch the product video here. Keep kids engaged while they learn how to brush independently Interacts with a fun and educational app that helps kids brush better and for longer Safe and gentle on teeth and gingival tissue, while removing more plaque in hard-to-brush areas 9.61″H x 4.37″W Model no. HX6321/02 Size: One Size. Color: White. Gender: unisex.