Not sure of the model, but it is one of their basic models. First one lasted perhaps 8 years and took a beating. Finally the battery would no longer hold a charge.
FYI.....There used to be a place called "Collar Clinic" that could install new batteries....I had em do a couple of TriTronics....they worked great but didn't last as long as the originals...but for about $60 you could get three of four more years out of one......that was 20+ years ago so they may or may not still be around....
