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Expand your SportDog Dog Training Collar to two or more dogs. Add another dog to your current SportDOG Brand SD-425 system or replace a lost or broken collar receiver with the SDR-AF Add-A-Dog Camo Receiver.
Posted by Kawena on Apr 10th 2013
I got this collar as an add-on to my SD-425 system. Now I have 2 collars for my 2 dogs that can deliver a tone without a shock which is a great feature. So far the collar has worked great and both my dogs are pleasures to take on leash-less walks together!