This is a one dog shocking system. It is an older system, but I just got it fixed, reconditioned, and tuned about a year ago at the Collar Clinic. Everything is in good, working order now. Brand new antennas for the collar and shocker. It also has a dummy collar that comes with it and a charger and hard carrying case. I believe it has 5 levels of stimulation.
Tritronics A1/70LR Dog Shocking System
