Actually Mad...no.
Submariners and SeaDwellers are both Rolex watches. They both use the same movements. The Submariner is a standard professional divers watch (1,000 foot depth in most instances), while the SeaDweller is a bit more substantial in case size and can withstand depths of 4,000 feet with a built-in automatic pressure valve.
Omega's line of professional dive watches are Seamasters (sorta like "Speedmaster" for their time measurement line, donja think?), which come in several depth capacities...some include a manual pressure valve which looks like an extra crown at the 10:00 position (I have one on a winder as we speak). One line with a wave dial is known as the James Bond watch because they were worn by several of the Bonds in the movies.
In reality, Flemming's Bond wore a Submariner...but Omega won the ad placement battle with the Broccolis.
In summation...Submariner, SeaDweller and Seamaster are all models of watches...not mfgs. More like FIAs, Slabsides and 427SCs rather than "BDR and SPF."
BTW, Panerai is an Italian mfg which was commissioned to build watches for the WWII-era Italian underwater demolition teams (forerunners of SEALs) which took out English ships in several Med ports. They were discovered anew by Stallone, who had a batch made for his buds/co-owners of Planet Hollywood as gifts. He intended to be the first to wear one in a movie (Daylight), but Awnold was finishing up Eraser first and heard about Stallone's plan, so they went back and added the first few minutes to Eraser, which includes a close up of Awnold using the Panerai crown lock as an alarm feature (which it is not...Hollywood creative license)...beat Stallone/Daylight to the theaters by a few weeks. They are big...the first to hit 44mm, and well suited for this big-assed writer's wrist since 1998. Many mfgs have followed suit with big watches, but the craze started with Panerai.
Now...some folks wear watches...some know watches. You are most welcome.
Obviously, none of this has a damn thing to do with the thread, but I just felt the need to impress myself.
