{"product_id":"000000008600","title":"IWC Ref. 1818 Cal. 8541B Automatic Winding, Overhauled, Manufactured 1977 International Watch Co","description":"\u003cp\u003eThis is an automatic winding Ref. 1818 \"IWC\" model manufactured in 1977.\u003c\/p\u003e\n\n\u003cp\u003eThe dial has discolored over time, transforming into a \u003cstrong\u003esoft champagne gold hue\u003c\/strong\u003e, exuding a vintage depth and luster.\u003cbr\u003e\nThe indexes are three-dimensional bar indexes, with slender hands painted black in their center, ensuring excellent visibility.\u003cbr\u003e\nAt the 12 o'clock position, the raised \"IWC\" logo coexists with the cursive \"International Watch Co.\" inscription, creating a sophisticated atmosphere characteristic of the final era of Old IWC.\u003c\/p\u003e\n\n\u003cp\u003eThe case is a well-proportioned round shape, with \u003cstrong\u003edelicate and sharp lugs\u003c\/strong\u003e forming a beautiful design.\u003cbr\u003e\nThe crown features the \"fish mark,\" a testament to its genuine IWC origin.\u003c\/p\u003e\n\n\u003cp\u003eThe movement housed within is the \"\u003cstrong\u003eCal. 8541B\u003c\/strong\u003e,\" the perfected version of the Pellaton automatic winding system.\u003cbr\u003e\nCompared to the conventional Cal. 8531, it is thinner, equipped with a hacking (stop-seconds) function and a quick-set date function (oscillating between 23:45 and 24:00), and also supports manual winding, making it a highly practical masterpiece for modern lifestyles.\u003c\/p\u003e\n\n\n\u003ch4\u003eCondition\u003c\/h4\u003e\n\n\u003cp\u003eThis watch has been \u003cspan class=\"marker\"\u003eoverhauled and its exterior has been refinished\u003c\/span\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe crystal retains some minor scratches that could not be removed by polishing, but they do not impair visibility, and the crystal remains clear.\u003cbr\u003e\n\u003cbr\u003e\nConsidering the balance with the slender lugs, we selected a new calfskin strap (Cajuman) made by Morellato in Italy. Its soft texture makes it comfortable to wear immediately.\u003cbr\u003e\n\u003cbr\u003e\nThe crown operates smoothly.\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan class=\"marker\"\u003eAs a vintage watch that has been manufactured many years ago, it is not water-resistant.\u003c\/span\u003e Do not use it in damp environments (e.g., on rainy days, while washing your face, or when perspiring on hot days).\u003cbr\u003e\nAs a precision instrument, please be very careful about drops, strong impacts, and magnetic fields (smartphones, PCs, speakers, etc.).\u003c\/p\u003e\n\n\u003cdiv style=\"page-break-after: always\"\u003e\u003cspan style=\"display: none;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003ch4\u003eHow to Operate Cal. 8541B\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow to pull the crown\u003c\/strong\u003e: Press a fingernail between the case and the crown and move it like a lever.\u003c\/p\u003e\n\n\u003cp style=\"margin-left: 40px;\"\u003eWhen pulling the crown, it is easier to press a fingernail between the crown and the case from the back.\u003cbr\u003e\nAlways remove the watch from your wrist before operating it.\u003cbr\u003e\nGentle operation can reduce stress on the crown and prevent it from coming out.\u003c\/p\u003e\n\n\n\u003cp\u003e\u003cstrong\u003eManual winding\u003c\/strong\u003e: Rotate the crown upwards in its normal position.\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eTime setting\u003c\/strong\u003e: Pull the crown and rotate it upwards.\u003c\/p\u003e\n\n\u003cp style=\"margin-left: 40px;\"\u003eThe second hand will stop (hacking function).\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\n\u003cstrong\u003eQuick-set date\u003c\/strong\u003e: Pull the crown and move the hands back and forth between \"\u003cstrong\u003e23:45 and 24:00\u003c\/strong\u003e\" when setting the time.\u003c\/p\u003e\n\n\u003cp style=\"margin-left: 40px;\"\u003e1) Move the hands to 12 o'clock at night (24:00).\u003cbr\u003e\n　　If the date changes, it is 12 o'clock at night. If it doesn't change, it is 12 o'clock noon.\u003cbr\u003e\n\u003cbr\u003e\n2) Once you have confirmed that the date has changed, move the hands back to 23:45.\u003cbr\u003e\n　　This prepares the calendar to display the next day.\u003cbr\u003e\n\u003cbr\u003e\n3) Advance the hands to 24:00 again.\u003cbr\u003e\n　　Confirm that the date has advanced by one day.\u003cbr\u003e\n\u003cbr\u003e\nRepeat steps 1) to 3) to quick-set the date one day at a time.\u003cbr\u003e\nOperate slowly to reduce stress on the movement.\u003c\/p\u003e","brand":"WATCH COLLE","offers":[{"title":"Default Title","offer_id":56190442144049,"sku":"000000008600-001","price":0.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/4939\/5761\/files\/11_000000008600.jpg?v=1788948205","url":"https:\/\/watch-colle.com\/en\/products\/000000008600","provider":"WATCH COLLE","version":"1.0","type":"link"}