Sparkle Toothbrush Ionic 1's (Mix Color) Product Details The toothbrush temporarily reverses plarity of tooth surfaces from (-) to (+) repelling plaque toward toothbrush head Micro fine bristles 0.01mm , Battery life around 2 years and easy check by touch on button Medically proven Anti Plaque toothbrush easy to use : with a wet palm or finger , lightly touch the metal band , then brush as normal Place of Origin Japan Directions Brush your teeth at least 2 times a day, morning and evening Ingredients N/A