The name of this watch is a tribute to the Venetian submarine Nereide. It was built in 1913, in the Royal Arsenale, commissioned to engineer De Bernardis during the First World War. The watch recalls the design of the submarines from this time, and bears a pressure of 20 bar. On the back of the watch you can see the Nereide. If you look closely, it is as if you are standing on the deck of the submarine.
The back of the GMT models is open, so you can see the beautiful mechanism at work.