purchasing EMS units

[mortac8]

@gciriani

For the above reasons, and because one cannot afford a personal EMS trainer with him/her all the time, you are better off with a more professional unit that has all of the parameters programmed depending on the training goal.

Personal EMS trainer? How do I get that job?
I have 2 units. One has a pulse width setting max of 250us and the other has no pulse width setting. What then?