Garmin Astro 320 T5
The Garmin Astro 320 T5 is the current generation of the Garmin Astro Line. This is a significant upgrade from the previous version.Garmin has based this version on the Garmin GPSMap 62 series handheld GPS. The collar unit has been upgraded to the T5 dog device with an extended range antenna and some nice integration. The previous version’s collar is compatible with the new unit.