The Rhythm Official Pod is the first atomizer that utilizes an ultrasonic technology that will convert e-liquid into vapor. The atomizer doesn't have a coil to heat, ensuring that the user will not have to worry about a burnt taste or harmful chemical emissions. There is a ceramic chip inside, that use a high frequency vibration to hits the e-liquid turning it into tiny molecules that provide the purest flavor. This set comes with 5 replacement tanks.