The Zlatoust Vodolaz diver watch is one enormous timepiece. It's nearly 3 inches across measured to the end of the crown cover. And not only is it big but heavy too, weighing over 0.5 pounds.
Clearly not for everyday use, the Vodolaz diver is more of a conversation starter or perhaps even a novelty watch.
Here's a link to an article about the Zlatoust Vodolaz diver watch.