Sonic vibrations functions well, but the mouthpiece is too shallow and the bristles are too far apart to clean my teeth fully. Have to shift around just to clean only about 3/4 of each tooth. The blue light works fine, but yet to see significant results as I've only used twice. Not secured to the charger when charging, topples easily. Recommend to use it supplementarily to normal brushing, as using it alone will definitely not be sufficient.