Without detailed pictures it's really impossible to add any comments directed at this particular movement.
Going back 5 years, when the first GMT movements came out and I did my detailed review and analysis, the base movement was an ETA 2836-2, with a aftermarket GMT module. That first model was absolute garbage, the GMT modification was crap.
Having seen my share of these during the past 5 years, I can say that the base movement is irrelevant, put a Ferrari engine in a Yugo - and you still have a Yugo.
Overall the quality of the asian GMT modification varies, from crap to quite good quality, the quality is all over the place and it doesn;t matter when or who you bought the watch from, what you get for quality is anyone's guess...
So basically nothing new, 5 years ago we had ETA based GMT movements.