{"product_id":"vintage-seiko-king-quartz-wristwatch-9923-8060-twin-quartz-1981","title":"Vintage Seiko King Quartz Wristwatch 9923-8060 Twin Quartz 1981","description":"\u003ch4\u003e\u003cstrong\u003eSPECIFICATION\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eReference\u003c\/strong\u003e: King Quartz\u003cbr\u003e\u003cstrong\u003eMovement\u003c\/strong\u003e: Twin quartz 9923\u003cbr\u003e\u003cstrong\u003eAge\u003c\/strong\u003e: April 1981\u003cbr\u003e\u003cstrong\u003eCase Size\u003c\/strong\u003e: 36mm\u003cbr\u003e\u003cstrong\u003eCase Thickness\u003c\/strong\u003e: 9mm\u003cbr\u003e\u003cstrong\u003eLug to Lug\u003c\/strong\u003e: 42mm\u003cbr\u003e\u003cstrong\u003eLugs\u003c\/strong\u003e: 18mm\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: Used Seiko watch\u003cbr\u003e\u003cstrong\u003eBox \u0026amp; Papers\u003c\/strong\u003e: No\u003cbr\u003e\u003cstrong\u003eCase Material\u003c\/strong\u003e: Stainless Steel\u003cbr\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e: 12-Months Warranty\u003c\/p\u003e\n\u003ch4\u003e \u003cstrong\u003ePOINTS TO MENTION\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIn fantastic pre-owned condition, with light wear from use\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCase and bezel have some very light scratches and mark\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhite frosted dial\u003c\/li\u003e\n\u003cli\u003eServiced Movement\u003c\/li\u003e\n\u003cli\u003eNew battery fitted\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eQuartz signed crown\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePaired with an unworn black leather strap with deployant clasp\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTHE WATCH\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Seiko King Quartz 9923-8060 is a vintage high-grade quartz wristwatch from Seiko’s late-1970s King Quartz line up featuring day and date complication, it was introduced during the peak of the quartz revolution., it represents Seiko’s commitment to bringing advanced quartz technology and refined design to a slightly more accessible tier without compromising on performance or quality.\u003c\/p\u003e\n\u003cp\u003eIt is powered by Seiko’s Calibre 9923 Twin Quartz movement, which incorporates two quartz crystals alongside a temperature compensation system to enhance accuracy beyond that of standard single-crystal quartz watches. This technology allowed the 9923 to achieve impressive precision.\u003c\/p\u003e\n\u003cp\u003eToday, the King Quartz 9923-8060 is valued by collectors and enthusiasts for its blend of technical innovation, dependable performance, and classic 1970s styling. While slightly more understated than its Grand Quartz counterparts, it remains a strong example of Seiko’s pioneering role in advancing high-accuracy quartz watchmaking during a transformative period in horological history.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTWIN QUARTZ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwin Quartz is Seiko’s temperature-compensated quartz system, introduced in the late 1970s. Unlike standard quartz watches that use a single quartz crystal, Twin Quartz uses two crystals along with a specialized circuit that compares their oscillations and corrects for temperature-related timing errors. This was important because temperature changes are the main reason quartz watches drift over time, and Twin Quartz was designed to eliminate that issue.\u003c\/p\u003e\n\u003cp\u003eThe way Twin Quartz works is fairly clever: the two crystals are cut so that their frequency shifts in opposite directions when temperature changes. As the temperature rises, one crystal’s frequency increases while the other decreases. The circuit compares the two frequencies and adjusts the output, effectively canceling out the temperature drift. This made Twin Quartz far more accurate than typical quartz watches of the era.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch4\u003e\u003cstrong\u003eOUR THOUGHTS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Seiko King Quartz 9923-8060 is a subtly elegant piece that reflects the strength of Seiko’s late-1970s quartz era. It combines classic period design with dependable accuracy and a level of build quality that still feels reassuring today. Its clean lines and balanced proportions give it an understated, timeless appeal, and wearing it highlights how effectively Seiko brought advanced quartz technology into everyday, practical watches.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFor today’s collector, vintage quartz isn’t a compromise, it’s a confident, considered choice backed by knowledge, care, and experience.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Past2PresentWatches","offers":[{"title":"Default Title","offer_id":62587696054659,"sku":"KSQ1406WO","price":375.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2397\/4423\/files\/seiko-king-quartz-9923-8060-front-_2.jpg?v=1789725748","url":"https:\/\/past2presentwatches.com\/products\/vintage-seiko-king-quartz-wristwatch-9923-8060-twin-quartz-1981","provider":"Past2PresentWatches","version":"1.0","type":"link"}