{"product_id":"longinesロンジン-60s-ultra-chron-cal-431","title":"LONGINES 60's \/ ULTRA-CHRON \/ Cal.431","description":"\u003ctable style=\"width: 100%; height: 548.625px;\" border=\"1\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" colspan=\"2\" style=\"width: 99.5798%; height: 19.5938px;\"\u003e\u003cb\u003e\u003cspan color=\"#0F000D\" style=\"color: #0f000d;\"\u003eProduct Details\u003c\/span\u003e\u003c\/b\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eYear of Manufacture\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e\n\u003cp\u003e1960s\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eMovement\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px;\"\u003e\n\u003cspan lang=\"EN-US\"\u003eCal.431 \/ 25 jewels \/ Automatic winding\u003c\/span\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eCase Size\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px;\"\u003e40.1mm (including lugs) \/ 37.6mm (including crown) \/ 11mm thickness \/ Lug width: 18mm \/ Weight: 50g (including strap)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eCase Material\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px; text-align: left;\"\u003e SS (Stainless Steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eAccessories\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eWatch body \/ RESUME original case \/ Our warranty card (1 year free warranty)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 19.5938px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eCondition\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 19.5938px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003e Antique (used) \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eWater Resistance\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003e Not water-resistant \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 215.531px;\"\u003e\n\u003ctd align=\"center\" style=\"width: 6.30252%; height: 215.531px;\"\u003eNote\u003c\/td\u003e\n\u003ctd style=\"width: 93.2773%; height: 215.531px;\"\u003e*This product will be overhauled after your order, so shipping will take approximately 1 to 2 months.\u003cbr\u003ePlease be aware of this in advance.\u003cbr\u003e\u003cbr\u003e*Please note that the color may vary slightly between the screen and the actual product.\u003cbr\u003e\u003cbr\u003e*This product is also sold in stores. While we update our inventory regularly, there may be instances where the product you purchased is out of stock. In the unlikely event that an item is unavailable, we may cancel your order. Thank you for your understanding.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-end=\"114\" data-start=\"65\"\u003eThe Longines \"Ultrachron\" was born in the 1960s, a period when the accuracy competition among mechanical watches reached its peak.\u003c\/p\u003e\n\u003cp data-end=\"217\" data-start=\"116\"\u003eThe Ultrachron is a high-beat automatic winding model from Longines, released in 1967.\u003cbr data-end=\"157\" data-start=\"154\"\u003eTo achieve higher accuracy in mechanical watches at the time, a high-beat movement with 36,000 vibrations per hour was adopted.\u003c\/p\u003e\n\u003cp data-end=\"364\" data-start=\"219\"\u003eThis mechanism, which sought stable accuracy by ticking more finely than typical mechanical watches, symbolizes Longines' long-standing chronometer technology.\u003cbr data-end=\"291\" data-start=\"288\"\u003eThe name \"ULTRA-CHRON\" on the dial, derived from \"Ultra-Chronometer,\" signifies that it is a model boasting high precision.\u003c\/p\u003e\n\u003cp data-end=\"461\" data-start=\"366\"\u003eThis is a timepiece that combines Longines' technical prowess with a practical design characteristic of the 60s.\u003cbr data-end=\"413\" data-start=\"410\"\u003eRather than ostentatious decoration, the watch's pursuit of accuracy reflects the distinctive elegance of Longines.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cbr\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cstrong\u003e■Dial and Case Design\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"486\" data-start=\"463\"\u003eThe dial is a soft silver tone.\u003c\/p\u003e\n\u003cp data-end=\"565\" data-start=\"488\"\u003eWith a clean layout that makes good use of negative space, slender applied bar indexes with black lines enhance visibility on the pale dial.\u003c\/p\u003e\n\u003cp data-end=\"641\" data-start=\"567\"\u003eThe hands are pencil hands, also with black lines.\u003cbr data-end=\"595\" data-start=\"592\"\u003eThey create a sense of unity with the indexes, offering the legibility expected of a practical watch within a simple face.\u003c\/p\u003e\n\u003cp data-end=\"713\" data-start=\"643\"\u003eA date display is positioned at 4 o'clock.\u003cbr data-end=\"661\" data-start=\"658\"\u003eInstead of the common 3 o'clock position, the slightly angled calendar adds a subtle touch of individuality to the neat dial.\u003c\/p\u003e\n\u003cp data-end=\"793\" data-start=\"715\"\u003eAt 6 o'clock, the Ultrachron logo and the inscription \"ULTRA-CHRON\" are displayed.\u003cbr data-end=\"760\" data-start=\"757\"\u003eThis striking detail subtly conveys its identity as a high-precision model.\u003c\/p\u003e\n\u003cp data-end=\"878\" data-start=\"795\"\u003eThe case is a rounded tonneau-shaped stainless steel case.\u003cbr data-end=\"823\" data-start=\"820\"\u003eThe natural curve from the bezel to the case sides and lugs creates a smooth, integrated feel rather than a sharp impression.\u003c\/p\u003e\n\u003cp data-end=\"988\" data-start=\"880\"\u003eThe fully polished case highlights its rounded form when it catches the light.\u003cbr data-end=\"926\" data-start=\"923\"\u003eDespite its generously proportioned design, the glossy finish keeps it from feeling heavy, making this a piece that exudes the modern atmosphere of the late 60s.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cstrong\u003e■Movement\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-05-07T204049.801.png?v=1778154680\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1014\" data-start=\"990\"\u003eThe movement is the automatic Cal.431.\u003c\/p\u003e\n\u003cp data-end=\"1077\" data-start=\"1016\"\u003eThis high-beat movement, vibrating at 36,000 beats per hour, underpinned the Ultrachron and clearly demonstrates Longines' dedication to accuracy at the time.\u003c\/p\u003e\n\u003cp data-end=\"1150\" data-start=\"1079\"\u003eAt its launch, Longines claimed a high accuracy for the Ultrachron of \"1 minute per month \/ 2 seconds per day,\" and the Cal.431 was the crucial movement supporting this claim.\u003c\/p\u003e\n\u003cp data-end=\"1213\" data-start=\"1152\"\u003eWhile high-frequency movements require delicate adjustment, this piece not only boasts elegant aesthetics but also demonstrates Longines' technical skill internally.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cstrong\u003e■Styling\u003cbr\u003e\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1275\" data-start=\"1215\"\u003eCase size: Length 40.1mm, Width 37.6mm, Thickness 11mm, Weight 50g\u003c\/p\u003e\n\u003cp data-end=\"1275\" data-start=\"1215\"\u003eThe combination of the rounded tonneau-shaped case and the clean silver dial gives it an elegant yet slightly distinctive impression.\u003c\/p\u003e\n\u003cp data-end=\"1354\" data-start=\"1277\"\u003eIt pairs well with sophisticated attire such as shirts, jackets, knitwear, and slacks, and when worn with simple clothing, the watch's form and dial details stand out even more.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1426\" data-start=\"1356\"\u003eThe modern case design, characteristic of the late 60s, also goes well with casual styles like denim or leather jackets, making it an easy watch for everyday wear.\u003c\/p\u003e\n\u003cp data-start=\"1201\" data-end=\"1275\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cstrong\u003e■Condition\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003eThe case has minor scratches from use but no noticeable damage or deep scratches.\u003cbr\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003eThe dial remains in beautiful condition with no signs of aging or corrosion.\u003cbr\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003eThe movement is operating well, with no issues during use.\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003cspan lang=\"EN-US\"\u003e \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003cstrong\u003e■For your confident purchase\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eAll watches handled by us undergo an internal inspection by a professional watch repair technician upon arrival and are confirmed to be authentic before being offered for sale, so you can purchase with confidence.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWhen you purchase a watch, we will provide it with a new leather strap from our store.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePlease select your desired color from the order selection tab.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e*For watches with original straps or metal bands, the leather strap will be sent separately as a spare and not attached to the watch.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA dedicated watch case will also be sent with your order.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"layout-grid-mode: char; mso-layout-grid-align: none;\"\u003e\u003cspan lang=\"EN-US\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan color=\"#ff0000\" size=\"1\" style=\"color: #ff0000; font-size: xx-small;\"\u003e●Important Notice for Antique Watch Purchases, Please Read Carefully●\u003cbr\u003e\u003cbr\u003eAt RESUME, for the sale of antique watches, we do not immediately hand them over upon receiving your order.\u003cbr\u003eInstead, we entrust them to a specialized craftsman for an overhaul (hereinafter referred to as OH), and deliver them after the OH is completed (this takes approximately 1 to 2 months).\u003cbr\u003e\u003cbr\u003eThe watch will be completely disassembled by a professional watch repair technician with a Grade 1 qualification. Thorough OH will be performed, including replacement of internal consumables such as gaskets, cleaning, and oiling, bringing the watch to a condition of approximately ±1 minute per day.\u003cbr\u003eFurthermore, upon delivery, we will include our unique OH certificate, explaining the work performed, along with photographs of the mechanical disassembly and maintenance.\u003cbr\u003e\u003cbr\u003eWhile it's true that the product itself, being pre-owned, cannot be guaranteed never to break, we take these steps to ensure you can enjoy the watch's original performance and use it with peace of mind in the future. We appreciate your understanding.\u003cbr\u003e\u003cbr\u003eWhen purchasing a product, a 1-year warranty period is provided depending on the model. Even after the warranty period has expired, repairs are available for a fee.\u003cbr\u003ePlease feel free to consult us if you do not have a repair shop nearby.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"RESUME","offers":[{"title":"black","offer_id":51375166095655,"sku":null,"price":199100.0,"currency_code":"JPY","in_stock":true},{"title":"Brown","offer_id":51375166128423,"sku":null,"price":199100.0,"currency_code":"JPY","in_stock":true},{"title":"Navy","offer_id":51375166161191,"sku":null,"price":199100.0,"currency_code":"JPY","in_stock":true},{"title":"wine","offer_id":51375166193959,"sku":null,"price":199100.0,"currency_code":"JPY","in_stock":true},{"title":"Chestnut","offer_id":51375166226727,"sku":null,"price":199100.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-05-07T204341.306.png?v=1778154664","url":"https:\/\/vintage-watch-resume.com\/en\/products\/longines%e3%83%ad%e3%83%b3%e3%82%b8%e3%83%b3-60s-ultra-chron-cal-431","provider":"RESUME","version":"1.0","type":"link"}