Dental care with patented 100% ultrasound wave technology and without abrasive brushing. Most gentle deep-clean with ultrasound waves and millions of nano-bubbles. Clinically tested and proven to thoroughly clean teeth and gums. No brushing or scrubbing required - nano bubbles gently remove of harmful bacterial plaque and stains Ideal for sensitive gums and teeth. Highly recommended for people wearing braces, prosthesis or implants Patented ultrasound piezo-chip is located right inside the brush head for most effective ultrasound delivery State-of-the-art ultrasonic attachment with a 4 contacts-pin Optimum control of cleaning time by smart haptic timer sound Safe monitoring of charging status by 3-color LED technology Battery-Save System - Timer for automatic switch-off after 6 minutes Ultra-light long-lasting lithium-Ion battery will last up to 15 days for daily use during 2 x 3 minutes. Made in Germany, imported. Global Patent. Clinically Tested. emmi-dent starter set includes ultrasound device, ultrasound bristle-head attachment, nano-bubble toothpaste (fresh mint flavor without abrasive particles), charging and storage station (110 Volt with US-power plug, no adapter required).