... HR-802A Monopolar Radio Wave Frequency Machine,RF Skin Tightening MachineTheory of Monopolar RF MachineMonopolar RF takes ... balances normal temperature, RF electric waveproduces heat into deep skin as nuclear technique, based on assurement of skincomfortable, ... ,and make them rearray, rebuilt skin soft bracket, finally get tight skin, remove wrinkle,recover skin elasticity and luster. Features of ...