The Garmin Astro 220 DC 30 Bundle GPS Dog Tracking System ($599.95 at Amazon.com, Sears, and REI) is designed for hunters and sportsmen but it also works for adventurers who run or
Used Garmin Astro 320,Garmin TT15 Used Dog Tracking Device Collar GPS Fits Garmin Alpha 100 Garmin Astro 320 Astro 430 Handheld - AliExpress