4D Converter Technology Deep and light Wrinkles Eliminating, Improving skin-elasticity and skin-shine Anti-aging whole body professional multifunctional rf machine ... 20mm,40mm,to treat on eye,face,body;2.Bipolar RF,be more effective and safety;3.Safety :non-operative,non ... for eye treatment 20mm:treat for face and body treatment 40mm:treat for body treatment Cooling system Water cooling+wind cooling ...