Discount TENS Ear Clip Stimulator, 2.5mm Mini-Plug

A little bulky and uncomfortable but worked great.

Too big and bulky for vagus nerve stimulation on front of ear nub.

I update the review with 5 stars because Discount TENS shipped me another Ear Clip pair and this one works makes very good contact. One ear clip is the positive terminal, the second ear clip is the ground. I can feel a pleasant current going from the positive contact to the ground contact. It is relaxing such that I even fall asleep while running a low amplitude current through the ear clips to try them out. Of course, one still has to be careful with opening the clip since the mechanical design of the tension spring of the clip is fragile, but with this cheap price it;s worth it to earn at least a pair of ear clips to try it out.Thanks to Discount TENS for resolving my issue in a fast and courteous manner,

They hurt! The plastic is "sharp" and "cuts" into the skin. NO actual cuts just painful and uncomfortable.

But at least the price is right. There are three issues I've noticed:First is a wire pin hinge came out and it was really tough to get everything back together. Not sure why the ends weren't flattened or something to prevent this; using it seems to work the pin out. Maybe if I can get a small bead of glue at the hold it would help?Second is the weakness of the springs, which don't hold the clips to anything reliably. Maybe I can find tiny elastic bands to add strength, but even the weight of the clips' own wires seem to be too much for them.Third, one delivers a strong signal but the other does not. I'm not sure what the difference could be, but they are clearly uneven. To some, this could be the most important flaw.One last note: they sting a bit when in use--not sure if this is normal, or a function of the conductor surface material, but I try to use a thickish dollop of gel to soften this.