Body Bolder, more modern design. Assembled with smooth and durable material with rounded corners. Panel Nearby controls with digital selectors and soft operation regulators. General On-Off Key With LED indicator on the panel. Transducer Piezoelectric System activated through ceramic chips with a frequency of 30,000 Hz. Operations without water The Piezoelectric system of the Transducer permits use in operations without the use of water. Unidirectional Vibrations Directing of the vibrations is perfect, in other words, they occur in a single longitudinal plane, allowing the performance of scaling without causing damage to teeth.