{"product_id":"omega-seamaster-ref-166042-cal-565-mens-automatic","title":"Omega Seamaster, Ref. 166.042, Cal. 565, Men’s Automatic","description":"\u003cp\u003eOmega Seamaster Ref. 166.042 is a striking late-1960s to early-1970s automatic built around a broad 34 mm square stainless-steel case, textured grey dial and vivid orange-red seconds hand. This fully serviced example retains its original watch components, including the signed Omega crown and buckle, and is currently running at approximately -12 sec\/day.\u003c\/p\u003e\u003ch2\u003eAngular Square Seamaster Case with Strong 1970s Presence\u003c\/h2\u003e\u003cp\u003eRef. 166.042 moves well away from the conventional round Seamaster profile. Its stainless-steel case uses a wide geometric outline, sharply cut corners and substantial brushed surfaces around a large square dial opening. Although the diameter is only 34 mm, the 41 mm lug-to-lug measurement and broad case shape give it noticeably more wrist presence than a typical round watch of the same nominal size.\u003c\/p\u003e\u003cp\u003eThe design belongs to the period when Swiss manufacturers were experimenting with increasingly architectural case forms and more sophisticated water-resistant constructions. This reference is associated with the broader Compressor-style design language of the era, but that historical context should not be taken as a claim of present-day water resistance. The caseback carries the Seamaster hippocampus medallion, while the crown is signed with the Omega symbol. The crisp geometry makes this one of the more visually unusual watches within the \u003ca href=\"https:\/\/www.vintagewatchstudio.com\/collections\/omega-vintage-watches\"\u003evintage Omega collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eTextured Grey Dial with Graphic White Hour Blocks\u003c\/h2\u003e\u003cp\u003eThe grey dial combines fine radial texture with broad white segmented hour blocks positioned around the perimeter. Applied silver-tone baton markers sit over this printed structure, producing visible depth and a highly graphic appearance. The applied Omega emblem and OMEGA AUTOMATIC signature occupy the upper half of the dial, with the Seamaster script set lower down.\u003c\/p\u003e\u003cp\u003eA framed date aperture at 3 o’clock is balanced by dark hour and minute hands and a long orange-red central seconds hand that provides the strongest color accent on the watch. The dial shows visible age-related spotting and patina, particularly around the central and right-hand areas, while the main printed geometry, applied indexes and signatures remain clear. The combination of muted grey, bright white blocks and the warm seconds hand gives this example a distinctive period character without relying on decorative complexity.\u003c\/p\u003e\u003ch2\u003eOmega Cal. 565 Automatic with Quick-Set Date\u003c\/h2\u003e\u003cp\u003eInside is Omega Cal. 565, a 24-jewel automatic movement with quick-set date adjustment. The quick-set mechanism makes calendar correction considerably easier than on many earlier vintage movements, while the automatic winding system keeps the watch mechanically convenient for regular wear. Cal. 565 is one of Omega’s established vintage automatic calibers and provides a conventional mechanical foundation beneath the much less conventional square case.\u003c\/p\u003e\u003cp\u003eThe movement has been fully serviced and is currently running at approximately -12 seconds per day under present test conditions. That figure represents the watch’s current measured performance rather than a permanent accuracy guarantee. A 12-month movement warranty is included. Buyers comparing similar pieces can also view other \u003ca href=\"https:\/\/www.vintagewatchstudio.com\/collections\/automatic-vintage-watches\"\u003eautomatic vintage watches\u003c\/a\u003e in the collection.\u003c\/p\u003e\u003ch2\u003eOriginal Omega Details with a New Black Leather Strap\u003c\/h2\u003e\u003cp\u003eThe watch retains its original watch components, while the fitted black leather strap is a new replacement. The original Omega buckle has been retained and is fitted to the new strap, preserving an important signed detail without presenting the leather as period-original. The signed crown and hippocampus caseback further reinforce the recognisable Seamaster identity of the watch.\u003c\/p\u003e\u003cp\u003eThe stainless-steel case shows normal light evidence of vintage use but retains strong brushed surfaces and well-defined angular facets. Combined with the aged grey dial, orange seconds hand and compact square proportions, this example has a distinctly architectural appearance that separates it from the round Seamaster designs more commonly associated with the period.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eOmega\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eSeamaster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003ctd\u003e166.042\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eSwiss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGender\u003c\/th\u003e\n\u003ctd\u003eMen’s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCaliber\u003c\/th\u003e\n\u003ctd\u003e565\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction Period\u003c\/th\u003e\n\u003ctd\u003eLate 1960s to early 1970s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDial Color\u003c\/th\u003e\n\u003ctd\u003eGrey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCase Diameter\u003c\/th\u003e\n\u003ctd\u003e34 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLug to Lug\u003c\/th\u003e\n\u003ctd\u003e41 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLug Width\u003c\/th\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCase Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMovement Type\u003c\/th\u003e\n\u003ctd\u003eAutomatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e-12 sec\/day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStrap\u003c\/th\u003e\n\u003ctd\u003eNew black leather strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBuckle \/ Clasp\u003c\/th\u003e\n\u003ctd\u003eOriginal Omega buckle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFully Serviced\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOriginal Watch Components\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e12-month movement warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Omega","offers":[{"title":"Default Title","offer_id":50538444849217,"sku":null,"price":780.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/2768\/1857\/files\/omega-seamaster-166042-cal565-mens-automatic.webp?v=1790430200","url":"https:\/\/www.vintagewatchstudio.com\/products\/omega-seamaster-ref-166042-cal-565-mens-automatic","provider":"Vintage Watch Studio","version":"1.0","type":"link"}