Here is a nice article on the China-made ST19** chronograph movement.
It can be found on the Lorier watch company website and is in conjunction with their Gemini chrono which is powered, yes, by the ST1901.
The ST19** series chronographs are the last remaining affordable mechanical chronographs in the world today.
Of course, as regards me personally, I knew all of that years ago, and in fact wrote about it myself on this very blog in 2013 about 8 years ago when I bought my first ST19** chrono which was ST1940, the automatic version.
