{"product_id":"seiko-ags-ref-5m22-8a10-cal-5m22-mens-quartz-analog","title":"Seiko AGS, Ref. 5M22-8A10, Cal. 5M22, Men’s Quartz Analog","description":"\u003cp\u003eSeiko AGS Ref. 5M22-8A10 from 1992 pairs early self-generating quartz technology with a sharply preserved two-tone case, deep blue dial and original Seiko bracelet. This fully operational, all-original example retains the distinctive stainless-steel and gold-plated finish that gives the watch its unmistakable early-1990s character.\u003c\/p\u003e\n\u003ch2\u003eEarly Seiko AGS Technology Before the Kinetic Name\u003c\/h2\u003e\n\u003cp\u003eThe most important feature of this watch is hidden beneath its conventional three-hand appearance. Seiko’s Automatic Generating System, or AGS, uses an oscillating rotor driven by wrist movement to generate electrical energy, which is then stored and used to power an electronically regulated quartz movement. It is therefore fundamentally different from both a conventional battery-powered quartz watch and a mechanical automatic, combining automatic energy generation with quartz time regulation.\u003c\/p\u003e\n\u003cp\u003eCal. 5M22 belongs to the formative period of this technology before Seiko adopted the better-known Kinetic name. The movement uses a 32,768 Hz quartz regulator and provides a date display at 3 o’clock. Ref. 5M22-8A10 has no external power-reserve indicator button, leaving the case unusually clean for an early self-generating Seiko. This technical background gives the watch particular interest within the broader history of \u003ca href=\"https:\/\/www.vintagewatchstudio.com\/collections\/seiko-vintage-watches\"\u003evintage Seiko watches\u003c\/a\u003e, where mechanical, quartz and hybrid technologies often overlapped during periods of rapid development.\u003c\/p\u003e\n\u003ch2\u003eDeep Blue Dial with Gold-Tone 1990s Detailing\u003c\/h2\u003e\n\u003cp\u003eThe dark blue dial has a smooth, subtly reflective finish that shifts in intensity under changing light. Slim applied baton indexes and a fine gold-tone minute track create a precise, uncluttered layout, while the framed date aperture at 3 o’clock is outlined in matching gold tone. The SEIKO signature sits prominently beneath 12, with AUTOMATIC GENERATING SYSTEM printed above 6 o’clock to identify the technology inside.\u003c\/p\u003e\n\u003cp\u003eThe narrow faceted hands continue the restrained two-tone theme, and the absence of additional complications keeps the dial unusually clean. Against the dark blue background, the gold-colored printing and bezel add warmth without overpowering the steel elements of the case and bracelet. The dial appears especially well preserved, with crisp printing, clean applied markers and very little visible age-related deterioration.\u003c\/p\u003e\n\u003ch2\u003e36 mm Two-Tone Case with Integrated Original Seiko Bracelet\u003c\/h2\u003e\n\u003cp\u003eThe 36 mm case is compact by modern standards but broad through the shoulders, with a 41 mm lug-to-lug measurement and integrated bracelet design that gives the watch noticeably more wrist presence than a conventional round 36 mm dress watch. Brushed stainless-steel surfaces dominate the case, while a gold-plated bezel and matching crown provide strong contrast around the dark blue dial.\u003c\/p\u003e\n\u003cp\u003eThe original Seiko bracelet, Ref. Z1684.I, continues the same two-tone construction with steel outer sections and gold-tone central links. Its broad, integrated first links make the bracelet an important part of the overall design rather than a separate accessory. The case, bezel and bracelet show light evidence of normal vintage use, but the plated surfaces remain particularly well preserved for a watch of this age, with the original contrast between steel and gold tone still clearly defined.\u003c\/p\u003e\n\u003ch2\u003eA 1992 Seiko from the Formative Self-Powered Quartz Era\u003c\/h2\u003e\n\u003cp\u003eProduced in August 1992, this Ref. 5M22-8A10 comes from an early stage in Seiko’s development of self-powered electronic wristwatches. The watch combines visual cues that are unmistakably early 1990s — dark blue dial, two-tone construction and integrated bracelet proportions — with technology that would later become a major part of Seiko’s Kinetic identity.\u003c\/p\u003e\n\u003cp\u003eIts strongest quality as a surviving example is completeness: the case, dial, crown and original bracelet remain together in their intended factory configuration, while the watch is fully operational. For collectors interested in the period between conventional quartz and later self-powered electronic watches, it offers a distinctly different branch of Seiko engineering from the mechanical watches that dominate most vintage collections. Related pieces can also be found among our \u003ca href=\"https:\/\/www.vintagewatchstudio.com\/collections\/quartz-analog-vintage-watches\"\u003evintage analog quartz watches\u003c\/a\u003e.\u003c\/p\u003e\n\u003ctable style=\"width: 100.058%; height: 293.75px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eSeiko\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eModel\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eAGS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eReference\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003e5M22-8A10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eGender\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eMen’s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eCaliber\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003e5M22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eProduction Year\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003e1992 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eProduction Period\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eAugust 1992\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eDial Color\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eDark Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eCase Diameter\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eLug to Lug\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003e41 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eCase Material\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eStainless Steel \/ Gold Plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eMovement Type\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eAutomatic Generating System (AGS) quartz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eBracelet\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eOriginal Seiko two-tone bracelet, Ref. Z1684.I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eFully Operational\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003cth style=\"width: 39.0178%; height: 19.5833px;\"\u003eOriginal Watch Components\u003c\/th\u003e\n\u003ctd style=\"width: 58.4449%; height: 19.5833px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":50538445078593,"sku":null,"price":490.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/2768\/1857\/files\/seiko-ags-5m22-8a10-cal5m22-mens-quartz-analog.webp?v=1790432897","url":"https:\/\/www.vintagewatchstudio.com\/products\/seiko-ags-ref-5m22-8a10-cal-5m22-mens-quartz-analog","provider":"Vintage Watch Studio","version":"1.0","type":"link"}