Face Four multi-depth cartridges directly transfer ultrasound energy into multiple layers of the face to trigger collagen renewal for a tighter, younger complexion.The 2.0mm cartridge can also treat both narrow and sensitive contours with a slimmer transducer and faster shot speed. Body Macro-focused cartridges at 6.0mm, 9.0mm, and 13.0mm directly transfer an equal distribution of ultrasound energy into the subcutaneous tissue of multiple body areas, inducing contractions as well as naturally disposing of stubborn fat cells for contouring purposes.