The 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. Available in Silver, Black PVD, Gold, and Rose Gold Jump to: Silver · Black PVD · Gold · Rose Gold Silver — brushed stainless skeleton with white movement plates Brushed 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. Black PVD — full-coverage matte black skeleton Black PVD coating across case, bracelet, and dial bridges. Lume indices contrast sharply against the dark movement plates, giving the skeleton a stealth/military read. Gold — yellow-gold PVD with matching skeleton Warm yellow-gold PVD on the case and bracelet, paired with gold-toned skeleton bridges for full tonal coherence. The dressiest of the warm finishes. Rose Gold — pink-gold PVD, warmer dress tone Soft pink-gold PVD treatment across the case, bracelet, and exposed movement plates — dressier than the yellow gold variant, with a slightly softer wrist read. Specifications Specification Value Movement Seiko NH72 (skeleton, automatic) Power Reserve Approx. 41 hours Case Material 316L Stainless Steel Case Finish Brushed with polished accents Diameter 39.5 mm (10H to 4H) Thickness 11.4 mm Crystal Sapphire Water Resistance 100 m Lume C3 Super-LumiNova Bracelet 316L Stainless Steel, integrated Nautilus style Compatibility This is a fully assembled watch. All components are modular and can be swapped: Dial: 28.5 mm skeleton dial (pre-installed) · Replaceable with any 28.5 mm dial compatible with NH72 or NH70 movements Hands: 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) Strap/Bracelet: · Compatible with any 20 mm strap, rubber band, or NATO What’s Included Fully assembled Nautilus skeleton watch 316L stainless steel Nautilus bracelet with micro-adjust clasp Nomods packaging Designed by Nomods The 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. Frequently Asked Questions Can I swap the dial or hands on this watch? Yes. 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 complete Seiko mod build guide for step-by-step instructions. Is this watch waterproof? It 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. What makes this different from building a Nautilus mod from parts? This 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 Nautilus cost and build guide for a full breakdown. Swap & Customize Nautilus Skeleton Rose Gold — same specs in a warmer rosegold tone Nautilus Skeleton Gold — full gold-tone alternative Black Skeleton Dial — swap in for a darker, higher-contrast look NH72 Skeleton Movement — spare movement for future builds Browse all Nautilus Seiko mods · Skeleton collection · Nautilus parts Nomods 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.
