Washable(IPX7) Sonic Electric Toothbrush Waved surface Dupont bristles with wear indicator bristle; Uniqe patented magnetic levitation brushless motor, over 24,000 strokes/min, makes 6.5mm wide swings on the bristle for effective cleaning; 1.5H quick charge, USB direct charging, convient for travel use; 3-brushing mode: Clean, White, Massage, offer varying oral care needs;  2-minutes smart timer auto off with 30s reminder; Memory function set for used brush mode;  Travel lock function: press and hold 5 second to lock or unlock, always unlock during charging; Red change to green charge indicator with low battery reminder; 650mAh Lithium battery, one full charge for up to 21 days using; Accessaries: 2 brush head w/ protective cap, USB charging cable.