The Amazfit GTR with the leather strap, titanium-body and high-end looks reminds me of the Garmin MARQ Expedition I wear — though there is an ORDER OF MAGNITUDE difference in price!
Functionally, other than the incredible, 24-day battery-life and water-resistance to 50-meters, it, with the trademark bright AMOLED display (with 326 pixel resolution), appears to have functionality similar to the quite impressive Amazfit Verge (e.g., GPS/GLONASS, 12 sport modes etc.). There is NO MENTION, as yet, of an ECG/EKG capability. But, that might come.
I have been told that it will be available in the U.S. in August 2019. I have not got an exact date yet. I will work on that.
Looks a nice watch. I might get one and put my Garmin MARQ Expedition away (to ‘appreciate’ in peace (SMILE)).