Good TENS Unit 5/17/2012
I am only upset that this TENS unit does not have a constant setting. I did not see that in the product description, although I could have missed it. You have an option for 15, 30, or 60 minutes. I am unclipping the unit, opening the unit, and flipping the switching back-and-forth every so often so that it doesn't shut off in 60 minutes.