Review (4/5): Not a great fit but maybe helpful
I found this doesn't fit very comfortable on my face and doesn't quite lay on my chin area the way I had hoped. I find I have to turn it nearly all the way up to feel some pulses . There is no plate directly under the center of the chin, which is my targeted area. The pro is it is cheaper in price then many other devices that look exactly like it. It's too soon to tell if it's really helping. I bought this to help with lymph drainage massage in the chin and neck area. If I put it all the way up, I do notice pulses in my teeth nerves so that's annoying. But too low and with the bad contact to skin in most areas, then I feel nothing. Might work for others better.