This is one of the nicest portable units that I have used.
Both my Wife and I have used it. So far so good
An old expression - Good for what ails ya - fits perfectly with my Tens 7000. It works as well as e stim at PT.
great product
Don't mind the 9V battery as I don't use for hours on end but just 10-15 mins here and there when DOMS sets in. Reusable pads are nice also. I've bought cheaper although this isn't expensive, but their pads and unit didn't last long as all.