I have used garmin astro 320. It works as it should. The handheld unit shows some wear but can read all the buttons and works perfectly. The dc50 collar works as it should and has a new blue collar on it. Next to the unit the rubber is torn partially but is still connected and still works perfectly. I called garmin and for 99.00, they will take the collar and send you a new one. I think that it could work perfectly for quite a while and could also glue or tape it to help it last longer. I just wanted to be honest about it for no surprises. So just keep in mind that that for 99.00 dollars more you will have a brand new collar with a nice 320. Please let me know if you have any questions. It comes with the collar charger and the 320 takes regular batteries.

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