This is Stowa Marine Automatic 40mm. My first and the only watch yet (but I'm now waiting for the shipment of a Mudmaster from Massdrop) which I purchased a year ago.
I remember the simultaneously painful and sweet process of choosing the first watch. This took months (literally) and some 180-degrees turns along the way. At the end I was set on a marine style watch and was mostly thinking about Hamilton Khaki Navy Pioneer, when I discovered Stowa. Their marine line spoke to me and coincidentally they had it on Christmas sale which made me pull the trigger.
At the end I coudn't be happier. Got 2 straps for it: horween derby leather band made by the local manufacturer in Ukraine (pictured), and NATO strap in marine style (blue/white stripes). Both work perfectly (I intend to wear leather one in winter and nylon in summer).
The watch tended to lose about 10 secs per day. I got it to the local watch-repair service and they tuned it to -1 sec per day.