Covers a lot of surface aeea and provides a lot support.
I have used this unit on my back with a slipped disk. I am constantly in pain. The Tens 7000 unit has helped with the pain a lot. It does not CURE the pain, but it helps, and if you are in pain, anything helps, and this unit has helped me a lot.
I have used other "tens" units but the TENS7000 nit is far better than the others. Easy to use, has the modes that I like, good battery life. I'm sold on this unit.
Had some issues with the unit when I got it. Company responded right away and replaced it. Great company!
The works great when the nerves in my feet flair up.