Works great for relief of back pain
Wanted this unit because of the power supply. I find it easier to change a battery than to plug into a USB port to charge constantly, plus the 9VDC provides the extra current so this unit can run at its rated 100mA output if needed. Works well, easy connections to the unit, and controls are easy to use.
I received it 3 days ago. In that time using it has eradicated 99% of the pain in my shoulder...it certainly works. I have not tried it on my knee but I am confident that it will reduce the pain. Do I recommend TENS 7000? Yes, without a shadow of a doubt. I have suggested to some of my friends at the gym that they should consider getting it.
One suggestion, there should be alittle case to carry the electrodes in and a spare lead wire.
TENS 7000 2nd Edition Digital TENS Unit Kit With Accessories