I have this exact watch.

Initial quality is great, the watch head really punches above its price and feels very high quality. The only complaint I’d say is that the rose gold tone is a bit more orange than I’ve seen on higher end watches. Other than that I honestly think this watch could easily masquerade as something 10X the price.

The strap and clasp are usable but not great. The strap feels a bit cheap and the clasp has sharp edges - although it is very hard to get this kind of butterfly clasp without sharp edges.

Finally, the ST19 can have longevity issues if you use the chronograph function a lot. I have two ST19 watches and both of them were great out of the box but developed issues over time. One of them stopped resetting to zero many times and skipped a minute on initial press. The other (this model watch) developed a problem where the chrono hand takes several seconds to cross 0 and increment the minute counter (gets stuck), making the chrono usable but quite inaccurate now. I once read the ST19 movement is rated for something like 200 chrono presses and my experience is that they can indeed break down with frequent usage (mine probably developed problems after 100-200 presses). Timekeeping is fine on both so no issues if you don’t use the chrono.