Vitokc started a thread in January about these devices and I was curious so I looked into them and bought an inexpensive unit from Amazon with attachments.
I find them incredibly painful. If the intensity is low I feel hot little needles. If I turn it up they are big hotter needles. I tried them first on my leg and am very wary of anywhere more sensitive.
There is also a "mode" function which gives you steady stimulation or in bursts or various combinations but same issue.
I also tried it on one of my UTRs and she didn't like it at all either.
Anyone have real experience with these and can make some suggestions? because right now, I would suggest GITMO try them out.