I have a quick TrackQTR10 with five good working collars One is a newer model at least four have new batteries Has a new orange handled antenna and a couple new magnets. One of the collars though mounted on a collar can easily be removed and piggybacked on a GPS collar as a back up And put back on its own collar at anytime Very easily with no rivets Tracking box antenna comes with its own case and everything comes with a bag 912-658-9157 for Questions or pics asking 500.00