For the movement of this watch the company used their caliber 1111 mechanism
The watch's page on the Omega website can be found here
Its flexible silicone strap has exceptional elasticity and is extremely comfortable to wear
appears to maintain its original finish
Please contact us if you would like the patina removed
Omega Constellation Manhattan Mens Large Chronometer Watch, Automatic, Date - Stainless Steel & 18K Gold Seamaster For the movement of thisOmega's flagship line for decades, the Constellation represents style, luxury, attention to detail, robust function, and most all, superior precision. Elegant and stately, it's well suited for both casual and professional dress. Today's offering showcases this uncommon mens Omega Constellation Manhattan based watch in steel and solid 18K gold with date produced in only limited numbers. It is in stunning near new old stock condition. It is the nicest