Manufacturer: Garmin 010-01041-40
The TT 10 track and train dog device is a high-sensitivity GPS tracker that uses 18 levels of momentary or continuous stimulation plus LED beacons and audible tones activated from the Garmin Alpha 100 (sold separately).
Rugged and waterproof to 33 ft, the TT 10 uses a braided steel VHF antenna to send its position data to the Alpha 100 (not compatible with Astro). TT 10 units, when sold separately, ship with a black collar strap. Replacement straps are available in multiple colors (sold separately).