{"product_id":"otsuka-lotec-no-7-5-2026-full-set-brand-new","title":"Otsuka Lotec No 7.5 | 2026 Full Set | Brand New","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eŌtsuka Lōtec No. 7.5 KAI — Stainless Steel | Jumping Hour | Full Set | 2026\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFew watches in the world demand as much explanation as an Ōtsuka Lōtec — and fewer still reward the curious as generously. The No. 7.5 is the creation of Jiro Katayama, a self-taught independent watchmaker based in Japan whose entire output across seventeen years amounts to roughly 500 pieces. Distributed exclusively within Japan through a lottery system, pieces reaching the international secondary market are genuinely rare. This is one of them.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe No. 7.5's case architecture takes its cues from 1930s 8mm film cameras — an asymmetrical dial layout featuring jumping hour, minute, and running seconds displays offers a compelling visual rhythm. Three lens-like apertures are positioned across the dial: a custom fisheye lens on the left displays the jumping hour, the largest central window reads the minutes off a rotating disc via a cam-shaped indicator, and a running seconds disc completes the trio. The 40 mm stainless steel case combines straight-grained and sandblasted finishing, measuring 11.2 mm thick rising to 14.8 mm at the lens-like displays. Sapphire crystals with AR coating front and back, see-through caseback, 30 m water resistance. \u003cspan class=\"inline-flex\" data-state=\"closed\"\u003e\u003ca href=\"https:\/\/www.joopiter.com\/auctions\/the-art-of-time\/otsuka-lotec-no-7-5-unworn\" class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eJoopiter\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" fill=\"currentColor\" viewbox=\"0 0 256 256\" class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan class=\"inline-flex w-1\"\u003e\u003c\/span\u003e\u003cspan class=\"inline-flex\" data-state=\"closed\"\u003e\u003ca href=\"https:\/\/monochrome-watches.com\/review-otsuka-lotec-7-5-jumping-hour-watch-indepdenent-watchmaking-japan-camera-lens-inspired-availability-price\/\" class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eMonochrome Watches\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" fill=\"currentColor\" viewbox=\"0 0 256 256\" class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePower comes from an automatic Miyota 82S5 with a proprietary module developed by Ōtsuka Lōtec — 21,600 vph, 40-hour power reserve, 26 jewels — driving the jumping hours, rotating minutes disc, and running seconds disc. Every component of the module is designed and finished in-house by Katayama-san personally. The padded calfskin leather strap is purpose-built for this reference, closed by a steel pin buckle. \u003cspan class=\"inline-flex\" data-state=\"closed\"\u003e\u003ca href=\"https:\/\/monochrome-watches.com\/review-otsuka-lotec-7-5-jumping-hour-watch-indepdenent-watchmaking-japan-camera-lens-inspired-availability-price\/\" class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eMonochrome Watches\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" fill=\"currentColor\" viewbox=\"0 0 256 256\" class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis example was acquired in May 2026 and is brand new, unworn, complete full set.\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eReference: No. 7.5 KAI\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBrand: Ōtsuka Lōtec\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWatchmaker: Jiro Katayama\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eYear: 2026\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCondition: Brand New \/ Unworn\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCase: 316L Stainless Steel, straight-grained \u0026amp; sandblasted finish\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCase Diameter: 40 mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCase Thickness: 11.2 mm (14.8 mm at lens displays)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCrystal: Sapphire with AR coating, front \u0026amp; caseback\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater Resistance: 30 m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDisplay: Jumping hour (fisheye lens), rotating minutes disc, running seconds disc\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMovement: Miyota 82S5 with in-house Ōtsuka Lōtec module\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWinding: Automatic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFrequency: 21,600 vph (3 Hz)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePower Reserve: 40 hours\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eJewels: 26\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStrap: Padded calfskin leather, purpose-built\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBuckle: Steel pin buckle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBox \u0026amp; Papers: Full Set\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProduction: ~500 pieces total lifetime output \/ Japan-exclusive lottery distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSold by Aslan Watches — physician-owned, 100% authenticity guaranteed, insured overnight shipping throughout the USA.\u003c\/p\u003e","brand":"Aslan Watches","offers":[{"title":"Default Title","offer_id":47673593626729,"sku":null,"price":6550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4027\/5049\/files\/20260605-1U0A4554.jpg?v=1780721326","url":"https:\/\/aslanwatches.com\/products\/otsuka-lotec-no-7-5-2026-full-set-brand-new","provider":"Aslan Watches","version":"1.0","type":"link"}