I own a astro 320 the one i thing i think they should do is enable you to be abLe to track other astros
That would be handy when you lose your garmin too...recently lost mine and it would have saved lots of steps for sure!
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Thats no joke, lost my 220 on horseback 1 night, found it after lookin for 5 hrs the next day.
"the sun is shining somewhere in texas" -Jason Boland