Radio frequency, also known as RF, is a rate of oscillation that can range from approximately 3 kHz to 300 GHz. This range of oscillation corresponds to the frequency of radio waves as well as the alternating currents that carry radio signals. Microwaves are produced by passing an alternating current, or AC, electrical current through a set of four elements at a frequency of 90 thousand times per second, or 90 kHz. This special pulse system is used. These low-power microwaves cause muscle contractions, which ultimately result in an increase in the skin’s elasticity, firmness, and suppleness.