Sparkle Ionic Wide-Head Toothbrush Product Details Plaque is bonded to teeth by positive ions contained in saliva.Sparkle Ionic Wide head loosens the bond with moving negative ions generated from the built-in battery, making it easy to remove plaque. -Removes plaque safely and efficiently -Prevents bad breath -Makes your teeth smooth -Refreshes your mouth - Stimulates your gums Place of Origin Japan Directions push buttom for battery life tester , Touch metal band with wet finger, brush your teeth as usual Ingredients PBT : Polypropylene Terephthalate , PP : Polypropylene