this 3d hifu have seven cartridges : 1.5mm,2.0mm,3.0mm,4.5mm for face 6.0mm,9.0mm,13.0mm for body 3d multi line ultrasonic knife + maggie instructions facial body anti-aging instrument no bleeding, no incision, no scar, no trauma. it has replaced the various effects of traditional facial anti-aging andwrinkle removing surgery, including face thinning, double chin removal, (1) remove wrinkles on around forehead, eyes, mouth, etc. (2) lifting and tightening both cheeks skin. (3) improving skin elasticity and shaping contour. (4) tightening the skin tissue on forehead, lifting the eyebrows lines. (5) improving skin complexion, making the skin delicate and bright (6) removing neck wrinkles, protecting neck aging.syi