Does the 4500NV AB/BT for $689 do anything better,different, etc. than if I was to purchase, for example, a 4500NV with BT for $399, then purchase the Applied Ballistics app for $30 and sync the Kestrel with my Android device? From what I understand, the Kestrel then populates the fields in the app. I know some people are using the AB Kestrel companion app to android for a better display anyway.
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