The Ollech & Wajs Astrochron Vs. The Doxa Sub 200 T.Graph II Today, we are looking at two spiritual competitors in the dive-watch-chronograph market — the Doxa Sub 200 T.Graph II and the Ollech & Wajs Astrochron. Both watches are beefy, tough options for those of us after a dive chronograph, but they have different quirks and design personalities. This article came about after spending con...