{"product_id":"omega-speedmaster-mark-iv-4-5-automatic-chronograph-ref-176-0012","title":"Omega Speedmaster Mark IV | 4.5 Automatic Chronograph | Ref. 176.0012","description":"\u003cdiv\u003e\n\u003ch1 class=\"h3 m-y-0\" style='box-sizing: border-box; font-size: min(1.5rem, 34px); margin-right: 0px; margin-left: 0px; hyphens: auto; hyphenate-limit-chars: 12 3 4; break-after: avoid-column; line-height: 1.25; color: rgb(25, 25, 25); font-family: \"Wix Madefor Text\", Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); margin-top: 0px !important; margin-bottom: 0px !important;'\u003e\n\u003cspan class=\"d-block\" style=\"box-sizing: border-box; display: block !important;\"\u003eOmega Speedmaster Mark IV\u003c\/span\u003e\u003cspan class=\"d-block text-md text-sm-lg text-weight-normal\" style=\"box-sizing: border-box; font-size: 1rem; line-height: 1.5; display: block !important;\"\u003e4.5 Automatic Chronograph | Ref. 176.0012 | Caliber 1045\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cbr\u003eThe Omega Speedmaster Mark 4.5 (ref. 176.0012) is a vintage automatic chronograph that blends classic 1970s design with modern (for its era) mechanical reliability. It uses the robust Caliber 1045 (Lemania-5100 based) automatic movement, delivering day\/date, 24-hour indication, and chronograph functionality. Though unofficially dubbed “Mark 4.5” by collectors, the 176.0012 pairs the case style of the earlier Mark IV with the automatic movement of later Speedmasters — giving it a unique place in the Speedmaster lineage. \u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003e\u003cfont size=\"6\"\u003eTechnical Data\u003c\/font\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e• Reference: 176.0012 \/ ST 176.0012 \u003c\/div\u003e\u003cdiv\u003e• Movement: Automatic — Caliber 1045 \u003c\/div\u003e\u003cdiv\u003e• Functions: Hours, minutes, small seconds, day, date, 24-hour indicator, chronograph, tachymeter.\u003c\/div\u003e\u003cdiv\u003e• Case Material: Stainless steel \u003c\/div\u003e\u003cdiv\u003e• Case Size: 42.0 mm \u003c\/div\u003e\u003cdiv\u003e• Dial: Black\u003c\/div\u003e\u003cdiv\u003e• Crystal: Mineral glass\u003c\/div\u003e\u003cdiv\u003e• Bracelet \/ Strap: Stainless steel bracelet\u003c\/div\u003e\u003cdiv\u003e• Water Resistance: Not Guaranteed on Vintage Watches\u003c\/div\u003e","brand":"OMEGA","offers":[{"title":"Default Title","offer_id":48633514197092,"sku":"EB-286971746718","price":2927.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0763\/4308\/3108\/files\/57_d68e28cb-d6a5-47f5-a07b-2909628d9f78.jpg?v=1782446753","url":"https:\/\/kronos-watches.com\/products\/omega-speedmaster-mark-iv-4-5-automatic-chronograph-ref-176-0012","provider":"Kronos Watches","version":"1.0","type":"link"}