The newest Tranqwil toothbrush uses Sonic Technology which is the technology across the industry with a leading 42,000 VPM Motor for powerful cleaning that provides 300% more plaque removal compared to a manual toothbrush, and 6X compared to other electric toothbrushes. It also gives you that deep thorough clean that leaves your teeth feeling fresh and smooth all day long Guaranteed! With 5 advanced performance modes including cleaning, whitening, and massage settings; you're smile will never have been better. The TT850 toothbrush has a 60-day battery life on full charge in addition to a vibrating timer to let you know when the recommended brushing time is over. Brush your teeth in the shower as well with this fully waterproof electric toothbrush.