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Registered
Join Date: Aug 2000
Location: Palm Beach, Florida, USA
Posts: 7,713
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Yes, all TENS units operate identically. The only difference between them is the quality of the materials in them and that only affects how long they last, not how well they work.
Lots of chiropractors make a lot of money by selling high priced TENS units. One who is honest enough to send you to the Internet to buy a cheap one on line is a step above the rest.
Just buy one on line that looks like it's decent enough quality that it will feel nice in your hands and won't fall apart but don't waste any money beyond that. They really are all the same underneath.
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