Update: returned
This unit relieves pain and inflammation from my knee & back osteoarthritis, but the electric wire going from where you plug it into the unit and where you turn it on gets heavy wear & tear. Hense the broken wire. It happened within return/replacement window. It's such a great product, I chose replacement.  But on this replacement unit, I wrapped that less than 2' section of wire in black electrical tape in hopes that will prevent it from breaking.<br />Update: even the electrical tape couldn't keep wire from breaking. I'm returning it & buying another brand. Amazon help said they don't have a customer support #
Rating: 3 stars