Santamedical TENS EMS Nerve Muscle Pulse Stimulator EletroTherapyProduct Description It is multifunctional device that offers both TENS and EMS functions and has 20 intensity levels. Santamedical Dual Channel TENS Unit EMS Unit Electrotherapy Pain Relief Device is highly recommended to get relief from pain at the comfort of your home. This device relieves pain just as effectively as expensive clinical quality devices. The device modes work according to your needs as you can choose TENS, EMS or combinations of them