Get those tough stains out with the powerful Sonic Toothbrush. Features: 3 brushing modes (normal, super, gum care); 2 minute timer with 30 second interval alert system; smart LED indicator with power shortage reminder and power-off protection; 38,000 strokes per minuteintelligent memory function (Unit will restart on your last usage model); and super charged NI-MH battery 6000mAh, full charged 6 Hours can last up to 25 days (twice a day based on 2 minute use).