{"title":"Nautilus Seiko Mod","description":"\u003cp\u003ePre-built Nautilus-inspired Seiko mod watches and individual parts for custom builds. Skeleton dials, brushed steel cases, rubber straps, and matching hands — all designed around the NH35\/NH36 and NH72 movements with 28.5 mm dial compatibility. Every watch ships fully assembled and ready to wear; every part is tested for fit by our team in Oslo.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e NH35, NH36, NH38, NH70, NH71, NH72 movements\u003cbr\u003e\n\u003cstrong\u003eDial size:\u003c\/strong\u003e 28.5 mm (direct fit on all Nautilus cases)\u003cbr\u003e\n\u003cstrong\u003eCase size:\u003c\/strong\u003e 39.5–40 mm · Thickness: 9.95–11.4 mm\u003cbr\u003e\n\u003cstrong\u003eWatch out:\u003c\/strong\u003e Nautilus cases use a 3 o'clock crown — not compatible with 4 o'clock SKX-style stems\u003c\/p\u003e\n\n\u003ch2\u003eHow to Choose Your Nautilus Mod\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePre-built watch vs. custom build:\u003c\/strong\u003e Our pre-built Nautilus watches ship fully assembled with movement, dial, hands, and strap — ready to wear out of the box. If you want to choose your own dial color, hands, or strap, browse the individual parts below and build from scratch using our \u003ca href=\"\/en-gb\/blogs\/seiko-mod-parts\/how-to-build-your-first-seiko-mod-a-step-by-step-guide\"\u003ecomplete build guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMovement choice:\u003c\/strong\u003e The NH35\/NH36 gives you a solid, reliable automatic movement with a date complication. The NH72 is the skeleton variant — choose this if you want visible mechanics through an open-worked dial. All Nautilus cases accept both.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCase finish:\u003c\/strong\u003e Available in silver (brushed steel), gold (PVD), rose gold (PVD), and black (DLC). The brushed-to-polished transition on the bezel is consistent across finishes. Silver is the most versatile; gold and rose gold make a stronger statement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStrap vs. bracelet:\u003c\/strong\u003e Nautilus watches come with rubber straps (gray, green, or black depending on model). The integrated lug design means standard straps don't fit — use Nautilus-specific straps with 20 mm lug width.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv itemscope itemtype=\"https:\/\/schema.org\/FAQPage\"\u003e\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhat movements are compatible with Nautilus cases?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cp itemprop=\"text\"\u003eAll Nautilus cases accept NH35, NH36, NH38, NH70, NH71, and NH72 movements. The skeleton builds use the NH72 for visible mechanics through the dial. All cases use a 3 o'clock crown position — they are NOT compatible with 4 o'clock SKX-style stems or 7S26\/7S36 movements.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhat size dial fits a Nautilus case?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cp itemprop=\"text\"\u003eNautilus cases accept 28.5 mm dials as a direct fit. Unlike some Royal Oak cases, they do not accept 30.8 mm dials. Read our \u003ca href=\"\/en-gb\/blogs\/seiko-mod-parts\/28-5mm-vs-30-8mm-seiko-dials-which-should-you-choose\"\u003edial size guide\u003c\/a\u003e for more on choosing the right dial.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eAre Nautilus mods good for a first Seiko mod build?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cp itemprop=\"text\"\u003eYes — our pre-built Nautilus watches require no assembly at all. If you want to build your own, the Nautilus case is straightforward: crystal and gaskets come pre-installed, and the case accepts standard NH-series movements without modification. Read our \u003ca href=\"\/en-gb\/blogs\/seiko-mod-parts\/how-to-build-your-first-seiko-mod-a-step-by-step-guide\"\u003estep-by-step build guide\u003c\/a\u003e before starting.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n    \u003ch3 itemprop=\"name\"\u003eWhat else do I need to complete a Nautilus build?\u003c\/h3\u003e\n    \u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n      \u003cp itemprop=\"text\"\u003eBeyond the case, you need a compatible movement (NH35 or NH72), a 28.5 mm dial, a set of hands, and a strap (20 mm lug width). You will also need basic tools: a case opener, hand press, and stem cutter. Browse our \u003ca href=\"\/en-gb\/collections\/nautilus-style-parts\"\u003eNautilus parts\u003c\/a\u003e collection to find matching components.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eComplete Your Build\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-gb\/collections\/nautilus-style-parts\"\u003eNautilus Mod Parts\u003c\/a\u003e — cases, dials, and hands for custom Nautilus builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-gb\/collections\/seiko-mod-dials\"\u003eSeiko Mod Dials\u003c\/a\u003e — skeleton and solid dials in 28.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-gb\/collections\/seiko-mod-hands\"\u003eSeiko Mod Hands\u003c\/a\u003e — compatible sets for NH35\/NH36 and NH7x\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-gb\/collections\/straps-bracelets-for-seiko-mods\"\u003eStraps \u0026amp; Bracelets\u003c\/a\u003e — rubber straps and integrated bracelets\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-gb\/collections\/seiko-mod-movements\"\u003eMovements\u003c\/a\u003e — NH35, NH36, NH72 skeleton, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eExplore More Styles\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/en-gb\/collections\/royal-oak-seiko-mods\"\u003eRoyal Oak Mods\u003c\/a\u003e · \u003ca href=\"\/en-gb\/collections\/seiko-nautilus\"\u003eAquanaut Mods\u003c\/a\u003e · \u003ca href=\"\/en-gb\/collections\/nh7x\"\u003eSkeleton Collection\u003c\/a\u003e · \u003ca href=\"\/en-gb\/collections\/complete-seiko-mods\"\u003eAll Complete Watches\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNomods is an independent brand. Our products are original designs inspired by iconic watch aesthetics. We are not affiliated with or endorsed by any luxury watch manufacturer. All brand names are used for reference purposes only.\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"seiko-mod-nautilus-40mm-skeleton","title":"Nautilus Skeleton — Seiko Mod Watch","description":"\u003cp\u003eThe Nautilus Skeleton is a 39.5 mm Seiko mod watch that puts the NH72 movement on full display through a skeleton dial and matching hands developed in-house by Nomods. The case is CNC-machined from 316L stainless steel with sharp brush-to-polish transitions on the bezel and lugs. Paired with a matching Nautilus-style integrated steel bracelet, sapphire crystal, and 100 m water resistance, this watch arrives fully assembled and ready to wear in your chosen finish.\u003c\/p\u003e\n\u003ch2\u003eAvailable in Silver, Black PVD, Gold, and Rose Gold\u003c\/h2\u003e\n\u003cp\u003eJump to: \u003ca href=\"#silver\"\u003eSilver\u003c\/a\u003e · \u003ca href=\"#black-pvd\"\u003eBlack PVD\u003c\/a\u003e · \u003ca href=\"#gold\"\u003eGold\u003c\/a\u003e · \u003ca href=\"#rose-gold\"\u003eRose Gold\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3 id=\"silver\"\u003eSilver — brushed stainless skeleton with white movement plates\u003c\/h3\u003e\n\u003cp\u003eBrushed 316L case with polished bevel transitions; matte skeleton dial bridges in raw nickel finish. The cleanest reading of the Nomods skeleton platform — closest to the unfinished movement aesthetic.\u003c\/p\u003e\n\n\u003ch3 id=\"black-pvd\"\u003eBlack PVD — full-coverage matte black skeleton\u003c\/h3\u003e\n\u003cp\u003eBlack PVD coating across case, bracelet, and dial bridges. Lume indices contrast sharply against the dark movement plates, giving the skeleton a stealth\/military read.\u003c\/p\u003e\n\n\u003ch3 id=\"gold\"\u003eGold — yellow-gold PVD with matching skeleton\u003c\/h3\u003e\n\u003cp\u003eWarm yellow-gold PVD on the case and bracelet, paired with gold-toned skeleton bridges for full tonal coherence. The dressiest of the warm finishes.\u003c\/p\u003e\n\n\u003ch3 id=\"rose-gold\"\u003eRose Gold — pink-gold PVD, warmer dress tone\u003c\/h3\u003e\n\u003cp\u003eSoft pink-gold PVD treatment across the case, bracelet, and exposed movement plates — dressier than the yellow gold variant, with a slightly softer wrist read.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement\u003c\/td\u003e\n\u003ctd\u003eSeiko NH72 (skeleton, automatic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Reserve\u003c\/td\u003e\n\u003ctd\u003eApprox. 41 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Finish\u003c\/td\u003e\n\u003ctd\u003eBrushed with polished accents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e39.5 mm (10H to 4H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e11.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eCrystal\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003e100 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLume\u003c\/td\u003e\n\u003ctd\u003eC3 Super-LumiNova\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBracelet\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel, integrated Nautilus style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis is a fully assembled watch. All components are modular and can be swapped:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDial:\u003c\/strong\u003e 28.5 mm skeleton dial (pre-installed) · Replaceable with any 28.5 mm dial compatible with NH72 or NH70 movements\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHands:\u003c\/strong\u003e Skeleton hands (pre-installed) · Replaceable with any hands compatible with NH-series movements (hour 1.50 mm, minute 0.88 mm, seconds 0.20 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStrap\/Bracelet:\u003c\/strong\u003e · Compatible with any 20 mm strap, rubber band, or NATO\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully assembled Nautilus skeleton watch\u003c\/li\u003e\n\u003cli\u003e316L stainless steel Nautilus bracelet with micro-adjust clasp\u003c\/li\u003e\n\u003cli\u003eNomods packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDesigned by Nomods\u003c\/h2\u003e\n\u003cp\u003eThe skeleton dial and matching hands were developed in-house. The brushing direction follows the NH72 movement’s bridge angles, creating visual coherence between the dial surface and the exposed mechanics beneath. We use C3 Super-LumiNova applied at 150 microns for over 8 hours of glow — each dial and hand set is individually checked for lume consistency before assembly. The case features deliberate brush-to-polish transitions: brushed tops, polished sides, mirroring the finishing language of high-end integrated-bracelet sports watches.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv itemscope itemtype=\"https:\/\/schema.org\/FAQPage\"\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eCan I swap the dial or hands on this watch?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cp itemprop=\"text\"\u003eYes. The case accepts any 28.5 mm dial compatible with NH72 or NH70 movements. To swap, remove the caseback, disconnect the crown stem, lift the movement, then change the dial and hands using a hand press. Read our \u003ca href=\"\/en-gb\/blogs\/seiko-mod-parts\/how-to-build-your-first-seiko-mod-a-step-by-step-guide\"\u003ecomplete Seiko mod build guide\u003c\/a\u003e for step-by-step instructions.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eIs this watch waterproof?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cp itemprop=\"text\"\u003eIt is rated to 100 m water resistance. The crystal gasket and caseback gasket are factory-seated during assembly. We recommend having it pressure-tested by a watchmaker if you plan to swim with it regularly.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat makes this different from building a Nautilus mod from parts?\u003c\/h3\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cp itemprop=\"text\"\u003eThis watch arrives fully assembled with factory-seated gaskets, quality-checked alignment, and our in-house skeleton dial and hands. Building from individual parts typically costs a few hundred dollars plus tools. This removes the assembly risk — especially around stem cutting and gasket seating, the two most common first-build mistakes. See our \u003ca href=\"\/en-gb\/blogs\/featured\/seiko-nautilus-mods-complete-cost-build-guide-2026\"\u003eNautilus cost and build guide\u003c\/a\u003e for a full breakdown.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSwap \u0026amp; Customize\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-gb\/products\/seiko-mod-nautilus-40mm-skeleton\"\u003eNautilus Skeleton Rose Gold\u003c\/a\u003e — same specs in a warmer rosegold tone\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-gb\/products\/seiko-mod-nautilus-40mm-skeleton\"\u003eNautilus Skeleton Gold\u003c\/a\u003e — full gold-tone alternative\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-gb\/products\/nautilus-skeleton-dial-30-8mm\"\u003eBlack Skeleton Dial\u003c\/a\u003e — swap in for a darker, higher-contrast look\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-gb\/products\/nh72-skeleton-movement\"\u003eNH72 Skeleton Movement\u003c\/a\u003e — spare movement for future builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/en-gb\/collections\/seiko-nautilus\"\u003eNautilus Seiko mods\u003c\/a\u003e · \u003ca href=\"\/en-gb\/collections\/nh7x\"\u003eSkeleton collection\u003c\/a\u003e · \u003ca href=\"\/en-gb\/collections\/nautilus-style-parts\"\u003eNautilus parts\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNomods is an independent brand. Our products are original designs inspired by iconic watch aesthetics. We are not affiliated with or endorsed by any luxury watch manufacturer. All brand names are used for reference purposes only. This watch is assembled by us using genuine TMI (Time Module Inc.) movements, a subsidiary of Seiko Instruments Inc., part of Seiko Group Corporation. This product is not an official Seiko watch.\u003c\/em\u003e\u003c\/p\u003e","brand":"Nomods","offers":[{"title":"Silver","offer_id":43323077165146,"sku":"NAU-W-SIL","price":350.0,"currency_code":"USD","in_stock":true},{"title":"Rose Gold","offer_id":43323077197914,"sku":"NAU-W-RSG","price":350.0,"currency_code":"USD","in_stock":true},{"title":"Gold","offer_id":43323077230682,"sku":"NAU-W-GLD","price":350.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43323077263450,"sku":"NAU-W-BLK","price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/2151\/4074\/files\/nomods-seiko-mod-nautilus-skeleton-silver-1218169918.jpg?v=1769456171"},{"product_id":"seiko-mod-nautilus-40mm","title":"Nautilus 40mm — Seiko Mod Watch","description":"\u003cp\u003eThe Nomods Nautilus is a 40 mm solid-dial Seiko mod watch built on our Nautilus-style platform — the solid-dial counterpart to the Nautilus Skeleton. The 316L stainless steel case sits just 9.95 mm thick, giving this watch an ultra-thin profile that wears closer to a dress watch than most Seiko mods. Inside, the Seiko NH35 automatic movement delivers hacking, hand-winding, and a 41-hour power reserve. Sapphire crystal up front, integrated steel bracelet with the signature Nautilus-style links, and 50 m water resistance round out the build.\u003c\/p\u003e\n\u003ch2\u003eAvailable in Blue, Rose Gold, and Green\u003c\/h2\u003e\n\u003cp\u003eJump to: \u003ca href=\"#blue\"\u003eBlue\u003c\/a\u003e · \u003ca href=\"#rose-gold\"\u003eRose Gold\u003c\/a\u003e · \u003ca href=\"#green\"\u003eGreen\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3 id=\"blue\"\u003eBlue — sunburst navy dial\u003c\/h3\u003e\n\u003cp\u003eDeep navy sunburst with cobalt shifts in angled light. Pairs the cleanest dress aesthetic with the Nautilus integrated bracelet — the most versatile of the three colourways.\u003c\/p\u003e\n\n\u003ch3 id=\"rose-gold\"\u003eRose Gold — warm pink-gold finish\u003c\/h3\u003e\n\u003cp\u003eSoft pink-gold case treatment with a matching sunburst dial. The dressiest of the three colourways, and the one Spanish-language searchers ask for as \u003cem\u003eoro rosa\u003c\/em\u003e.\u003c\/p\u003e\n\n\u003ch3 id=\"green\"\u003eGreen — sunburst forest dial\u003c\/h3\u003e\n\u003cp\u003eForest-green sunburst dial with subtle olive undertones; a less-common Nautilus colourway with quiet character.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Size\u003c\/td\u003e\n\u003ctd\u003e40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e9.95 mm (ultra-thin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement\u003c\/td\u003e\n\u003ctd\u003eSeiko NH35 (automatic, hacking, hand-winding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Reserve\u003c\/td\u003e\n\u003ctd\u003eApprox. 41 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003e50 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial\u003c\/td\u003e\n\u003ctd\u003eSolid sunburst, 30.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial Size\u003c\/td\u003e\n\u003ctd\u003e30.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBracelet\u003c\/td\u003e\n\u003ctd\u003eIntegrated stainless steel, Nautilus-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaseback\u003c\/td\u003e\n\u003ctd\u003eScrew-down stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLume\u003c\/td\u003e\n\u003ctd\u003eApplied indices with luminous fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis is a fully assembled watch built on the Nautilus platform. The modular design allows component swaps:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDial:\u003c\/strong\u003e Pre-installed sunburst 30.8 mm dial — Replaceable with any 30.8 mm dial compatible with NH35\/NH36 movements, including our \u003ca href=\"\/en-gb\/products\/nautilus-skeleton-dial-30-8mm\"\u003eNautilus Skeleton Dial 30.8mm\u003c\/a\u003e if you want to switch to a skeleton look.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHands:\u003c\/strong\u003e Pre-installed Nautilus-style hands — Replaceable with any NH-series compatible hands, such as the \u003ca href=\"\/en-gb\/products\/royal-oak-hands-v1-silver\"\u003eRoyal Oak V1 Silver Hands\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully assembled Nomods Nautilus watch in your selected colourway\u003c\/li\u003e\n\u003cli\u003eIntegrated stainless steel bracelet (pre-installed)\u003c\/li\u003e\n\u003cli\u003eWatch box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDesigned by Nomods\u003c\/h2\u003e\n\u003cp\u003eThe Nautilus 40mm is our own take on the integrated-lug, sport-luxury silhouette. The case is CNC-machined from 316L stainless steel, brushed and polished by hand, and the integrated bracelet flows directly from the lugs — no spring bars, no break in the line. The 9.95 mm thickness keeps the watch slim and wearable for daily use, and the 30.8 mm dial opens up the broader Nomods dial catalogue for future builds. Every watch is checked individually before shipping.\u003c\/p\u003e\n\u003ch2\u003eBrowse Collection\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/en-gb\/collections\/nautilus-style-parts\"\u003eNautilus 40mm Seiko Mod Parts\u003c\/a\u003e — \u003ca href=\"\/en-gb\/collections\/seiko-nautilus\"\u003eAll Seiko Nautilus Mods\u003c\/a\u003e — \u003ca href=\"\/en-gb\/collections\/nautilus-style-parts\"\u003eNautilus Mod Parts\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNomods is an independent brand specializing in Seiko-compatible watch modifications. We are not affiliated with, endorsed by, or connected to Seiko, Rolex, Audemars Piguet, Patek Philippe, or any other watch brand mentioned on this site. All brand names and trademarks are the property of their respective owners and are used solely for descriptive and comparative purposes.\u003c\/em\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"@id\": \"https:\/\/nomods.co\/products\/seiko-mod-nautilus-40mm#product\",\n  \"name\": \"Nautilus 40mm — Seiko Mod Watch\",\n  \"description\": \"40mm Nautilus-style Seiko mod watch in three sunburst colorways (Blue, Rose Gold, Green). 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