{"product_id":"patek-philippe-flyback-chronograph-annual-calendar-steel-olive-green-dial-ref-5905-1a-001-2026","title":"Patek Philippe Flyback Chronograph Annual Calendar — Steel | Olive Green Dial | Ref. 5905\/1A-001 | 2026","description":"\u003cdiv role=\"feed\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv role=\"article\" class=\"rounded-lg focus-visible:shadow-focus focus-visible:outline-hidden\" tabindex=\"0\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"group group\/message-row\"\u003e\n\u003cdiv class=\"contents\"\u003e\n\u003cdiv class=\"group relative relative pb-[var(--msg-assistant-pb,0.75rem)]\"\u003e\n\u003cdiv class=\"font-claude-response relative leading-[1.65rem] [\u0026amp;_pre\u0026gt;div]:bg-bg-000\/50 [\u0026amp;_pre\u0026gt;div]:border-0.5 [\u0026amp;_pre\u0026gt;div]:border-border-400 [\u0026amp;_.ignore-pre-bg\u0026gt;div]:bg-transparent [\u0026amp;_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-[var(--msg-text-inset,0.5rem)] [\u0026amp;_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [\u0026amp;_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-[var(--msg-text-inset,0.5rem)] [\u0026amp;_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"grid grid-rows-[auto_auto] min-w-0\"\u003e\n\u003cdiv class=\"row-start-2 col-start-1 relative grid grid-rows-[auto_auto] isolate min-w-0\"\u003e\n\u003cdiv class=\"row-start-1 col-start-1 relative z-[2] min-w-0\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3 [\u0026amp;_\u0026gt;_*:last-child]:mb-0 print:block print:[\u0026amp;_\u0026gt;_:where(:not(:first-child))]:mt-3 standard-markdown\"\u003e\n\u003ch3 dir=\"ltr\" class=\"mt-3 -mb-1 text-[1.125rem] font-bold\"\u003ePatek Philippe Flyback Chronograph Annual Calendar — Steel | Olive Green Dial | Ref. 5905\/1A-001 | 2026\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eReference:\u003c\/strong\u003e 5905\/1A-001\u003cbr\u003e\u003cstrong\u003eYear:\u003c\/strong\u003e 2026\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New (one factory handling mark on caseback)\u003cbr\u003e\u003cstrong\u003eCase:\u003c\/strong\u003e 42mm polished steel | 14.13mm thick | 30m water resistance | Sapphire crystal | Sapphire display caseback\u003cbr\u003e\u003cstrong\u003eBracelet:\u003c\/strong\u003e Integrated steel, contrasting polished and satin-brushed finishing | Patented Patek Philippe fold-over clasp, secured with four independent catches\u003cbr\u003e\u003cstrong\u003eMovement:\u003c\/strong\u003e Calibre CH 28-520 QA 24H | Self-winding | 4Hz \/ 28,800 vph | 45–55 hour power reserve | 402 parts | 37 jewels | 21K gold central rotor\u003cbr\u003e\u003cstrong\u003eMovement finishing:\u003c\/strong\u003e Patek Philippe Seal | Gyromax® balance | Spiromax® balance spring | Flyback chronograph with vertical clutch, central chronograph hand, 60-minute counter | Annual Calendar with day, date, month, and day\/night indication in aperture\u003cbr\u003e\u003cstrong\u003eDial:\u003c\/strong\u003e Sunburst olive green | White gold applied faceted baton-style hour markers | White gold faceted dauphine-style hands with white luminescent coating | Annual Calendar indications displayed along an arc\u003cbr\u003e\u003cstrong\u003eSet:\u003c\/strong\u003e Full set — box and papers included\u003cbr\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Insured overnight, US domestic\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe 5905\/1A is a genuinely rare thing in Patek's catalogue — a complicated watch in steel, combining a flyback chronograph with an Annual Calendar in a case that reads unmistakably sporty next to the precious-metal norm. The sunburst olive green dial gives the whole piece a casual, almost outdoorsy register, with the calendar indications arranged along an arc rather than stacked in apertures, and white gold faceted dauphine hands with luminescent coating keeping legibility sharp against the textured green.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAt 42mm and 14.13mm thick, the polished steel case carries real wrist presence, and the integrated bracelet's contrasting polished and satin-brushed links close on Patek's patented fold-over clasp with four independent catches — a security detail rarely found outside the manufacture's sport references. One factory handling mark is present on the caseback; the watch is otherwise unworn and factory-fresh.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eInside is the calibre CH 28-520 QA 24H, a column-wheel flyback chronograph with vertical clutch and 60-minute counter built around the Annual Calendar mechanism — 402 parts and 37 jewels finished to the Patek Philippe Seal, with a 21K gold central rotor delivering 45 to 55 hours of power reserve. Brand new, 2026, full set.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAslan Watches — physician-owned • 100% authenticity guaranteed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"flow-root\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"ml-[calc(var(--msg-text-inset,0.5rem)_-_0.25rem)] mt-6 flex items-center transition-transform duration-300 ease-out\"\u003e\n\u003cdiv class=\"p-1 -translate-x-px\"\u003e\u003cspan class=\"inline-flex\" id=\"_r_lb_\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 100 100\" width=\"32\" height=\"32\" fill=\"var(--cds-clay, #d97757)\"\u003e\u003cpath d=\"m19.6 66.5 19.7-11 .3-1-.3-.5h-1l-3.3-.2-11.2-.3L14 53l-9.5-.5-2.4-.5L0 49l.2-1.5 2-1.3 2.9.2 6.3.5 9.5.6 6.9.4L38 49.1h1.6l.2-.7-.5-.4-.4-.4L29 41l-10.6-7-5.6-4.1-3-2-1.5-2-.6-4.2 2.7-3 3.7.3.9.2 3.7 2.9 8 6.1L37 36l1.5 1.2.6-.4.1-.3-.7-1.1L33 25l-6-10.4-2.7-4.3-.7-2.6c-.3-1-.4-2-.4-3l3-4.2L28 0l4.2.6L33.8 2l2.6 6 4.1 9.3L47 29.9l2 3.8 1 3.4.3 1h.7v-.5l.5-7.2 1-8.7 1-11.2.3-3.2 1.6-3.8 3-2L61 2.6l2 2.9-.3 1.8-1.1 7.7L59 27.1l-1.5 8.2h.9l1-1.1 4.1-5.4 6.9-8.6 3-3.5L77 13l2.3-1.8h4.3l3.1 4.7-1.4 4.9-4.4 5.6-3.7 4.7-5.3 7.1-3.2 5.7.3.4h.7l12-2.6 6.4-1.1 7.6-1.3 3.5 1.6.4 1.6-1.4 3.4-8.2 2-9.6 2-14.3 3.3-.2.1.2.3 6.4.6 2.8.2h6.8l12.6 1 3.3 2 1.9 2.7-.3 2-5.1 2.6-6.8-1.6-16-3.8-5.4-1.3h-.8v.4l4.6 4.5 8.3 7.5L89 80.1l.5 2.4-1.3 2-1.4-.2-9.2-7-3.6-3-8-6.8h-.5v.7l1.8 2.7 9.8 14.7.5 4.5-.7 1.4-2.6 1-2.7-.6-5.8-8-6-9-4.7-8.2-.5.4-2.9 30.2-1.3 1.5-3 1.2-2.5-2-1.4-3 1.4-6.2 1.6-8 1.3-6.4 1.2-7.9.7-2.6v-.2H49L43 72l-9 12.3-7.2 7.6-1.7.7-3-1.5.3-2.8L24 86l10-12.8 6-7.9 4-4.6-.1-.5h-.3L17.2 77.4l-4.7.6-2-2 .2-3 1-1 8-5.5Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aslan Watches","offers":[{"title":"Default Title","offer_id":47908018520169,"sku":null,"price":55750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4027\/5049\/files\/20260814-1U0A1615-Edit.jpg?v=1786840193","url":"https:\/\/aslanwatches.com\/products\/patek-philippe-flyback-chronograph-annual-calendar-steel-olive-green-dial-ref-5905-1a-001-2026","provider":"Aslan Watches","version":"1.0","type":"link"}