{"product_id":"000000008343","title":"Longines Ultra-Chron Ref. 7991-1 Cal. 431 36,000 bph Automatic, Serviced, Circa 1969","description":"\u003cp\u003eThis is a 1969 Longines \"Ultra-Chron.\"\u003cbr\u003e\nThe Ultra-Chron is a model equipped with the \u003cspan class=\"marker\"\u003e\u003cstrong\u003e10-beat \"Caliber 431\"\u003c\/strong\u003e, which was introduced in 1968\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp\u003eThe dial features a sunburst finish.\u003cbr\u003e\nThe Longines \"winged hourglass\" brand logo is positioned at the 12 o'clock position, and the three-dimensional \"Ultra-Chron\" logo is at the 6 o'clock position, both of which catch the light and shine.\u003c\/p\u003e\n\u003cp\u003eThe case is round, with slender lugs that give it a stylish impression.\u003cbr\u003e\nThe case back is a screw-back type, featuring the Ultra-Chron logo.\u003cbr\u003e\nThe crown features the \"LONGINES\" and \"winged hourglass\" logos.\u003cbr\u003e\nThis piece is also notably equipped with its \u003cspan class=\"marker\"\u003eoriginal LONGINES bracelet\u003c\/span\u003e.\u003c\/p\u003e\n\n\u003ch4\u003eHow to operate the Caliber 431\u003c\/h4\u003e\n\n\u003cp\u003eThere is no original hacking (second hand stop) function.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eManual winding\u003c\/strong\u003e: Rotate upwards in the normal crown position\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eTime setting\u003c\/strong\u003e: Pull the crown out and rotate downwards\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eDate quick-set\u003c\/strong\u003e: Pull the crown out and cycle back and forth between \"10 PM and 12 AM\" during time setting\u003cbr\u003e\n\u003cbr\u003e\n1) Move the hands until 12:00 midnight (24:00).\u003cbr\u003e\n　　If the date changes, it is 12:00 midnight. If it does not, it is 12:00 noon.\u003cbr\u003e\n\u003cbr\u003e\n2) Once you have confirmed that the date has changed, turn the hands back to 10:00 PM (22:00).\u003cbr\u003e\n　　This prepares the movement to advance to the next day's date.\u003cbr\u003e\n\u003cbr\u003e\n3) Advance the hands to 12:00 midnight (24:00).\u003cbr\u003e\n　　Confirm that the date has advanced by one day.\u003cbr\u003e\n\u003cbr\u003e\nBy repeating steps 1) through 3), you can advance the date one day at a time.\u003cbr\u003e\nPlease operate slowly to reduce the burden on the movement.\u003c\/p\u003e\n\n\u003ch4\u003eCondition\u003c\/h4\u003e\n\n\u003cp\u003eThis watch has been \u003cspan class=\"marker\"\u003eoverhauled and externally polished\u003c\/span\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan class=\"marker\"\u003eThe bracelet is original to Longines\u003c\/span\u003e and fits a maximum wrist size of 189mm (including the extension plate).\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan class=\"marker\"\u003eDue to its age, this watch is not waterproof.\u003cbr\u003e\nPlease avoid wearing it on rainy or hot days.\u003c\/span\u003e\u003cbr\u003e\nAlso, please be careful of shocks and magnetism.\u003c\/p\u003e","brand":"WATCH COLLE","offers":[{"title":"Default Title","offer_id":56190298947889,"sku":"000000008343-001","price":0.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/4939\/5761\/files\/1_000000008343.jpg?v=1788947201","url":"https:\/\/watch-colle.com\/en\/products\/000000008343","provider":"WATCH COLLE","version":"1.0","type":"link"}