In two earlier threads I talked about this (click here and click here to see the posts), and finally I got one. I was in Tokyo earlier this year a few days before the official launch of this watch so though there were posters of it in several stores, no stock was to be found.

52 mm in ceramic and titanium. It is over the top but extremely cool. This is made in the same factory as the mechanical Grand Seiko watches and contains a near identical movement to the automatic Grand Seiko except this one lacks the decorative finishing and some other finer construction details. The case quality is superb, but the dial and hands are not quite Grand Seiko standard though more than enough for a watch of this price range.
- SJX





But 52mm may be part of the fun, SJX.
Interesting watch, intrigant, enormous, dark but with these big luminous indexes and this small and large hands.
A bit if there was an unbalanced harmony...
Enjoy and have fun!
Best,
Nicolas
I often ridicule people who wear watches that are clearly too big, the Panerai Egiziano for example, but perhaps people in glass houses shouldn't throw stones.
- SJX
you will get used to it. my biggest is 54mm, and it has weapon like qualities.
congrats, i look forward to see it in the flesh....where to get one??

yes, this is an outstanding and classic vintage diver by Seiko.
in fact, i saw one with the older model (6157-7001) few months before from my local watch maker. he said it is his collection, unfortunately he will not sell it.
was told by him, the movement of this watch was the same as GS and made by GS, the caseback is one piece metal, very nice and solid.
congrats, you have a very nice one too.
stefan
The shroud is what makes these watches so large. I agree that there's water resistance alone isn't reason to have such a huge case. Though, if you believe Seiko's tales the shroud was added as protection in response to criticism of their original 300m diver.
I love the Seiko shrouded divers. They were so ahead of the game, it's incredible.
I just couldn't wear one outside of diving. Waaay too big. I considered getting one as a part my my "collection' but if I can't wear it, I'm not buying it. In any case (pun!), I prefer the 811x and 704x cased models. Much more comfortable, particularly the 811x, which is superb for a 45+mm case.
The case is actually two piece, a monocoque inner titanium case surrounded by a ceramic outer case. Apparently the reason for this particular construction is a patented gasket system that prevents helium from entering the case during saturation diving, thus eliminating the need for a helium escape valve. In addition the ceramic is more scratch proof than steel.
While it is likely that today, in 2009, Seiko could easily create a diver's watch with those qualities in a much smaller case, the original (of which this is a modern copy) was made in 1975 and for its time it was the most advanced diver's watch.
- SJX
...is a front loader, as you say. The outer shroud bolts on to protect the bezel (and hence the crystal retaining structure) from side impacts as well as the case itself. The gaskets on the crystal are (relatively) impermiable to He. Which is a far more elegant solution than escape valves. Titanium, ceramic coatings, GS movement, fantastic watch.
Butt since the likelihood of ever doing Sat diving is about nil, I'm happy with my oldies. My bank balance is pleased with that, too.
Oh, and thanks for posting
while the SBDX011 is automatic.
The inner case is titanium, while the outer case, known as the 'shroud', is ceramic.
- SJX
Plus, this 52mm Seiko will wear much smaller than a lot of other large watches since this watch has no lugs.
- AT
if you are comfortable with it. why the heck not..
Tony
This watch looks like a combination of Issey Miyaki trapezoid and omega Speedmaster Moonwatch “Alaska Project”.