[willbrie]

I know this thread is ancient, but I was looking for the same info re another Sportura. I finally found the answer from Cousins, in case anyone else comes here looking like I did. Seiko say that the "screws" are in fact just cosmetic plugs, and you don't want or need to try and remove them. Bezel is held on purely by the gasket. So no special tool required (or exists, presumably)