PM-720 Digital TENS/EMS Combo combines two different neuromuscular stimulation treatments in one unit. The Electronic Muscle Stimulator (EMS) sends electronic impulses to the muscle motor nerves, which loosens muscle fibers, increases blood flow, and encourages muscle growth. The Transcutaneous Electrical Nerve Stimulator (TENS) stimulates sensory nerve endings to release endorphins and blocks pain receptors to the brain. The PM-720 TENS/EMS Combo uses dual, isolated channels, so therapy can be applied to two different parts of the body at the same time. Features: Pain relief and muscle stimulation LCD Screen EMS three modes: Synchronous (S), Alternate (A), Constant (C) pulse rate and pulse width are adjustable TENS six modes: Burst (B), Pulse Rate/Pulse Width (N) are adjustable, Modulated Rate and Width (MRW), Modulation Width varied 40% (S1), Modulation Width varied 70% (S2) Nine preset programs (P) Adjustable timer, 5 minutes each step and constant Cumulative (compliance