i like the new sea-dweller but i HATE those crown guards.. they just look "cheap"
as for the rehaut, its actually a dual angle rehaut... the crystal sits on top of where it says original escape valve. Theres some other pics on the AD site that show how thick the crystal really is.. looks to be about half a cm thick LOL yikes! Well it is waterproof to 4km so it would have to be pretty tough.
Heres a pic i stole from crick over at RWI He took the screenshot off the Rolex site i believe...