?BATTERY OPERATED: Uses 1 AAA battery (not included). ?IPX7 WATERPROOF: IPX7 waterproof craft allow direct wash with water after brushing, easy and convenient, Easily and safely enjoy the brushing even in the shower. ?EASY TO USE: With an easy on/off button, effective teeth cleaning with fun characters to help ease children into creating lifelong healthy habits. ?U+2 BRUSHES: U-Type brush head made up of food grade silicone, is soft to prevent gum being damaged. DuBang brush head can effectively clean teeth. Round brush head with soft bristles can remove hard-to-reach plaque. 3 type of brush heads to meet different needs. ?MAKE BRUSHING FUN: Cute and colorful animal-themed set is perfectly designed to make brushing easy and fun for little brushers ages 2-6 years.