TENS (Transcutaneous Electrical Nerve Stimulation) sends stimulating pulses along nerve strands and across the skin's surface by use of electrodes. The current travels through electrodes and into the skin stimulating specific nerve pathways to produce a tingling, massaging sensation that provides the patient with pain relief. SME, Inc. USA stocks and discounts a wide variety of TENS units, including analog & digital units with replaceable or rechargeable batteries. We also have discounts on in-clinic units! Questions about a particular unit? Start a live chat or call 800-538-4675 to connect with our Customer Service team. Looking to buy in bulk? Contact our Sales team for quantity break information Quote@smeincusa.com