Tri-Tronics Classic 70 G3 EXP...I think this is going to be it...found it pretty cheap...$267.00...but by time I get the holster and another collar it will be hurting my back pocket...
I bought this unit with 2 collars back some months ago and really like it Reuben. It works very well for me, but I haven't had to try the range on it, says a mile and I don't doubt it. Tri-Tronics stuff is tough or has been for me. They have lithium-ion batteries now and last a long time, plus charge up in no time. I think you've made a wise decision....good luck with it.