EMS is a low-frequency equipment, and EMA is the only medium-frequency equipment developed by German science and technology, which is a substitute product of EMS. Low-frequency pulse can only stimulate the superficial and superficial muscles of the skin, and the somatosensory sensation is poor. EMA intermediate frequency pulse can mobilize more than 90% muscles of the whole body to move together at the same time, and its technical core is to act on the cellular level, activate cells, promote metabolism and quickly achieve the effect of reducing fat.