Vacuum: plus specially designed rollers manipulate leads RF penetration to be even 5-15mm. At the same time,vacuum and roller mechanical tissue manipulation nips and stretches fibrillar connective tissue, effectively breaks down subcutaneous fat. Biopolar RF: high frequency wave permeates epidemis and take effect on the collagen-rich dermal tissue directly which makes water molecules in the skin move to and fro wildly. The move produces controllable heat and results in contraction of collagen and generation of new collagen and dermal remodeling.Energy is transmitted to the place between three electrodes; The current permeates target tissue and generate heat Infrared Laser: completely noninvasive,safe, have no side effect for fat loss. It penetrates into skin surface and stimulates the fat cell membranes, changing their permeability. The fat cells reduce their overall size, and intracellular fat is released. Then the fatty triglycerides flow out of the disrupted cellmembranes and into the interstitial space, where they gradually pass through the body's natural metabolic functions with no harmful physiological effects; LED light: Stimulate cells to produce quantities ATP.Repair the cells and prevent skin lose after the body slimming. Roller:comes with 4 directions: inside used for fat resolve ;outside used for improve the cellulite tissue.internal and external used for body contour