FacialDefy 6.0 works differently from a 40K or 80K cavitation machine. It combines focused HIFU with 6.78MHz Lipo RF and includes deeper body probes up to 18mm, making it more suitable for targeted body contouring and skin tightening. 40K and 80K cavitation machines are generally better suited for broader, repeated body-contouring treatments over larger areas. Neither technology can guarantee a specific amount of fat reduction, and results vary depending on the treatment area, fat thickness, settings, and individual response.