The mkprak series sonic vibratory toothbrush provides superior oral health benefits and advanced features like slim non-slip design to enhance the ease of brushing. Switchable two-speed settings (22,00028,000- vibrations) either for gentle cleaning or maximum plaque removal. It also features a 2-minute brushing timer with 30-second intervals to ensure adequate brushing throughout the mouth. Soft dupont nylon bristles, ensures tissue-friendly plaque removal. Most suitable for daily brushing for 2 minutes, twice a day. Dento smile sonic completely cleanses all cervices with ease and efficiency best suited for adults as well as children most suitable during any dental therapies-like orthodontic, periodontic pedodontic, surgical, implant prosthodontic procedures. Waterproofing of ipx7, fully washable - but dont leave it soaked it in water for a long time. All you need to hold the brush stationary-at an angle of 45 degrees to occlusal plane on the gingival margins- and let the brush do the rest to get best cleaning change to different sections of mouth with same angulation. The 30 second time-lapse will indicate to change position, you enjoy all the benefits of sonic vibratory method of brushing over old rotary brush method (where the brush head is rotating, the cleaning is more due to scrubbing ) in sonic vibrations the brush head vibrates at the speed of 28000 vibrationa minute, which virtually shakes out all the debris adhering to teeth and supporting structures. This process of debridement is aided and enhanced with the presence of salivatoothpaste as a fluid medium, for the needful fluid mechanics, to clean all the surfaces efficiently. This method is similar to any other ultrasonicsonic cleaning process. It leaves your mouth with this wow sense of cleanliness and fresh breath highest vibrations available in this class, compared to others in the market, for efficient cleaning in shortest possible time (2 minutes)