Don't want to start a TT vs Dogtra vs anything else thread, there's enough of those. I was curious how old your e-collar is? I was pheasant hunting yesterday and started thinking that my current collar is going to be going on its fourth dog soon and still on original batteries. I have a TT Classic 70sxl 2 dog. Both collars and the transmitter have been through alot since 2002 when I got them. I keep meaning to send them to Collar Clinic to have them gone through but it just seems like between training, hunting for waterfowl and upland and guiding some it just hasn't gotten done. Its been a dang good piece of equipment. A training partner keeps telling me to buck up and get a new model as they are smaller, better, blah, blah blah. I don't think I will. I'll keep my trusty friend.