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Can someone tell me the difference between the TT10 and the TT15?

Also they say the Astro is compatible with the TT15, but what about the TT10?

And will the Astro run the stimulation on these collars?

the TT15 has Bark Detection, GLONASS, Vibrate, and can be used as a remote for the the Garmin Virb Action Cameras.

the TT10s cannot be tracked by a Astro 320

when the TT15 is added to a Astro 320 system, it will not have any training options as the Astro system is Track only

Thank's

Fish4evr