Original vintage 1960's Rolex advertisement for the Rolex Submariner dive watch - "If you were looking for lost empires here tomorrow, you'd wear a Rolex." 
 
Dimensions: Roughly 8 inches wide by 11 inches high.
 
And the Rolex Submariner?  Do we really need to discuss this legendary dive watch? 
 
Well, maybe we will for just a second - the Submariner is a line of sports watches designed for diving and manufactured by Rolex.  The first Submariner was introduced to the public in 1954 at the Basel Watch Fair, and was the first watch to be waterproof up to 100 metres (330 ft). 
 
The Rolex Submariner is considered "a classic among wristwatches," manufactured by one of the world's most widely recognized luxury brands.  Due to its immense popularity, there are numerous homage watches by well-established watchmakers, as well as illegal counterfeits. 
 
Today, the Submariner models are equipped with Rolex Calibres 3230 and 3235, respectively, and feature luminescent hour markers, a unidirectional rotatable bezel with Cerachrom ceramic insert, and a solid-link Oyster bracelet.  Also upgraded with time, since the mid-1950s?  Contemporary Submariner models underwater diving depth rating is 300 metres (1,000 ft).  Impressive, to say the very least.