{"product_id":"portugieser-tourbillon-day-night","title":"Portugieser Tourbillon Day \u0026 Night","description":"\u003cp data-end=\"543\" data-start=\"172\"\u003e Continuing its legacy in the realm of grand complications, IWC presents the \u003cstrong data-end=\"321\" data-start=\"256\"\u003ePortugieser Hand-Wound Tourbillon Day \u0026amp; Night (Ref. IW545901)\u003c\/strong\u003e , featuring an 18-karat Armor® gold case, polished and satin-finished, with gold hands and appliqués. Thanks to its enhanced microstructure, Armor® gold is significantly harder and more wear-resistant than traditional 5N gold.\u003c\/p\u003e\n\n\u003cp data-end=\"842\" data-start=\"545\"\u003e The highly polished obsidian black dial offers remarkable depth and creates a striking visual contrast. The watch is fitted with an elegant curved black alligator leather strap, crafted by \u003cstrong data-end=\"763\" data-start=\"752\"\u003eSantoni\u003c\/strong\u003e , the renowned Italian manufacturer of luxury shoes and leather accessories.\u003c\/p\u003e\n\n \u003cp data-end=\"1369\" data-start=\"844\"\u003eAt 6 o'clock is a \u003cstrong data-end=\"898\" data-start=\"868\"\u003eminute-by-minute flying tourbillon\u003c\/strong\u003e , one of the most sophisticated complications in haute horlogerie. The assembly and adjustment of this delicate mechanism are reserved for IWC Schaffhausen's most experienced master watchmakers. The tourbillon places the balance wheel and pallet fork in a rotating cage that completes a full rotation on its axis every minute. This constant rotation compensates for the effects of gravity on the oscillating system, thus improving the watch's accuracy.\u003c\/p\u003e\n\n \u003cp data-end=\"1881\" data-start=\"1371\"\u003eBecause the tourbillon cage is stopped and restarted several times per second, its overall weight must remain extremely low. Although composed of \u003cstrong data-end=\"1530\" data-start=\"1515\"\u003e56 components\u003c\/strong\u003e , the mechanism weighs only \u003cstrong data-end=\"1573\" data-start=\"1557\"\u003e0.675 grams\u003c\/strong\u003e . The anchor and escape wheel are made of \u003cstrong data-end=\"1628\" data-start=\"1616\"\u003esilicon\u003c\/strong\u003e and treated with a special diamond coating known as \u003cstrong data-end=\"1718\" data-start=\"1700\"\u003eDiamond Shell®\u003c\/strong\u003e . This technology reduces friction and improves energy transmission within the movement, contributing to a \u003cstrong data-end=\"1880\" data-start=\"1839\"\u003ehigh power reserve of 84 hours\u003c\/strong\u003e .\u003c\/p\u003e\n\n \u003cp data-end=\"2035\" data-start=\"1883\"\u003eThanks to the \u003cstrong data-end=\"1932\" data-start=\"1905\"\u003eintegrated stop-tourbillon\u003c\/strong\u003e mechanism, it is possible to completely stop the movement and set the watch \u003cstrong data-end=\"2034\" data-start=\"2013\"\u003eto the nearest second\u003c\/strong\u003e .\u003c\/p\u003e","brand":"IWC","offers":[{"title":"Default Title","offer_id":47424378732794,"sku":"IW545901","price":123000.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/4909\/7210\/files\/Untitled-650.png?v=1750435959","url":"https:\/\/checkout.chateaudivoire.com\/en\/products\/portugieser-tourbillon-day-night","provider":"Château D'Ivoire","version":"1.0","type":"link"}