Bought the original model - it doesn't have a model # on the unit or case - many, many YEARS ago and the family and I have used as needed. Very pleased with it and it still works great by the way.
Saw the new rechargeable model online when ordering electrodes and decided I was tired of trying to find a 9V when needed. Really like the totally digital controls!
I ordered it in the recommendation of a friend. Used it for the first time. My lower back was sore after golfing so I used the tens 7000 and it actually worked releasing the tension
Well, I jumped to the conclusion that the Tens 7000 unit should came in with the electrodes. Unit came today ( 3) days after electrodes.. I used unit and seemed to be fine. Time will tell.
I was replacing an older version of this seat. It is very safe and fits into the toilet nicely so there is no slipping when using it. It is about the same as my previous one. Just one comment, there are some marks on the plastic with little indentations. Looks likes flaws in manufacturing, but not worth sending back. I will just have to be careful to clean it thoroughly.
I recently got a TENS7000 and I am finding helpful, more helpful than my previous stimulation unit. I an quite athletic and older so I get strains and pulls that this will help with and keep me going.