... 4D variable frequency technology4D multi-polar radio frequency plastic body joined 4D instrument to 5MHz frequency conversion technology, ... when combined with negative pressure suck fat; Treatment Scope: Face: Thin line, pouch, forehead wrinkle, cheek line, wrinkle ... neck line, double chin, skin-smoothing, deep & light wrinkle. Body: Arm, waist, abdomen, leg, pregnancy line, loose-skin tightening ...