Hi Kevscar,
I hope you are doing alright.
I agree that it shares features with a TENS. It stimulates the nerve from outside the body. I think maybe the amplitude technical specs are different in the way that Frequency Specific Microcurrent is similar but different from TENS.
I wish that I had more faith in our patent office and FDA categories. New medical devices here tend to piggyback on a previously approved category to get out of lengthy clinical safety trials. So you can end up with different devices in the same category.
I found this out the hard way when early on in my journey a podiatrist recommended EWST, extracorporeal shock wave treament. I tried it once and it was excruciating. It blasts shock waves through the tissue and is like lithotripsy on a small local area. The device by Dynatron, is approved under the FDA as a "massager".
Crazy!
I think we have to be careful of new gizmo treatments in general and have a high degree of suspicion about them. I got into trouble with cold laser also. Things that don't aggravate others can aggravate our already sensitive nerves and should always be approached with caution.