This rugged, all-weather collar combines a high-sensitivity GPS receiver and VHF antenna
Rugged, All-weather Collar for Astro 320 High-sensitivity, top-mounted GPS/GLONASS receiver.
Simple and Effective Electronic Dog Training in Your Hands
The TT 15 track and train dog device with collar is a top-mounted,high-sensitivity GPS/GLONASS receiver
The TT 10 track and train dog device is a high-sensitivity GPS tracker
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