While I traveling to Dallas for business, I stumbled across the most interesting product in the mall of all places. Since Iwas basically wasting time, I said sure, I will try the electric massager. It actually was really nice and the guy was a good salesman so I picked it up.
Turns out this thing really works and is very handy to have around. It gives you a nice shoulder massage when you don't have anyone around to do it for you. Also, the little pads used on my accupressure headache point (fleshy part of the hand between thumb and first finger) seem to be effective for a light headache.
This one is similar to the one I have but it seems to have 5 modes and mine only has four. It also has the shipping through Amazon so free ship if you have prime.
There's a lot of different brands of tens units out there, along with these little Chinese numbers like I got. (Mine is the ismart SoCool Mini Massager, and I when I bought replacement sticky pads they were from HiDow which I think makes equivalent models) There are also models that are sold as electric muscle stimulator for sports training not to mention the medical tens units. I bet they all work similarly.