Original vintage 1982 print advertisement for his and hers two-tone Heuer dive watches.
 
Dimensions: roughly 7.75 inches wide by 10.75 inches high
 
Shortly before and after TAG's takeover of Heuer in the mid-1980s, the latter produced a line of legendary divers, first in Monin, France, with automatic movements, and subsequently in Switzerland with Swiss quartz movements - these were the legendary 1980s Heuer Ref. 980 dive watches.  
 
Make no mistake - these dive watches, made from 1979 - 1984, saved Heuer from bankruptcy during the 1980s.  
 
Per Hodinkee in "Why The Heuer Diver Professional Deserves A Lot More Credit Than It Gets," "Its stunning success was unexpected and came at the best possible time for the company.  In Jack Heuer’s own words: 'We could not imagine that this model would be the very watch that was to help the company recover.'  Surprisingly, this glorious hero was not a chronograph – hell, most of the time it's powered by a quartz movement.  So let's settle this injustice and look at a relatively obscure diving watch, despite it being a bestseller from 1979 to this very day.  This is the Heuer Diver Professional."
 
This quintessential no-nonsense Heuer tool watch was produced between circa 1979-84, but in some important way it continued to be made throughout the 1990s (more on this below).  For a brief history of these amazing Heuer divers, as noted in a fascinating Hodinkee article, “A Personal Note: Marking Time With A Humble Heuer” - “In 1980, Heuer decided it was time to build a proper dive watch.  Sure, years earlier, it had fitted its "Automotive-Aviation" Autavia chronograph with a diving bezel, but the brand was largely focused on motorsports watches, which is where it had built its reputation."