I've been on the look for this watch! Simple and beautiful!

Also try the Vario straps that are meant for the Casio World Timer.

Interesting, thank you! Would have loved a wrist shot, wondering wether the wider, quite chunky strap would beef up or rather overwhelm the quite small watch. After some experimenting I am wearing mine (Nano Universe reissue) on a black and white parachute strap which blends a minimalist "designer look" with a distinctly military style in a similar way the watch does. It is also equally water resistant.

I agree it looks great but for a different reason. It's the white stitching of the strap continuing the white-ish line from the steel lug. Incidentally this is why all Rolex watches other than Cellini tend to look poor on straps. The Oyster case is really thick, especially on new Rolex models. They can work on them but you have to choose the strap carefully like you have done here.