Here's the thread where I worked out the amount of applied electricity. There was a discussion a while back where a poster was using an electric collar to train, and I'm addressing that thread and heated discussion in the thread link I'm posting for you. Please do not think I am directing the thread at you. I realize you are just asking what info others have, which I think is a very good thing to do before you make a decision.
http://www.yorkietalk.com/forums/off...=shock+collars