Very disappointed!
This unit is rather unusual and difficult to use.  There are very sharp, stinging electrical impulses coming from round extended discs that randomly shock the neck.<br />There is some heat radiating from it but because it doesn't fit snugly on the neck any benefit from it is lost.<br />Other reviewers have also had these same problems.  I’m not giving this unit a higher rating as it doesn’t fit my neck correctly and the bee sting like impulses actually hurt.<br />The  rechargeable batteries don’t stay charged for long. It needs recharging constantly.
Rating: 1 stars