Sanrio / Hello Kitty With 7,000 fine vibrations per minute, it cleans without damaging the surface of your teeth. It can also be expected to have a gum massage effect. It operates with one AA battery and can be used repeatedly as the battery can be replaced. Made in Japan for peace of mind. This is a Don Quijote limited edition Sanrio character design. It comes with a case, making it convenient to carry around.