Complete Seiko Mods

About

Every prebuilt Seiko mod watch from Nomods in one place. Choose from Royal Oak skeleton and waffle-dial models in 37 mm and 41 mm, Nautilus skeleton builds on integrated bracelets, Petrichor skeleton and solid-dial watches with domed sapphire crystals, and Aquanaut sport-luxury watches on matching rubber straps. All watches ship fully assembled with Seiko NH35 or NH72 automatic movements, sapphire crystals, and free worldwide shipping. Prices range from $180 for clearance models to $390 for premium Petrichor finishes. Movements used: All watches run either the NH35 (solid-dial builds with date, hacking, and hand-winding) or the NH72 (skeleton builds that expose the movement through the dial). Both are automatic movements manufactured by Seiko Instruments with approximately 41 hours of power reserve. Water resistance: Royal Oak models are rated to 100 m. Nautilus, Petrichor, and Aquanaut models are rated to 50–100 m depending on the specific case. All watches include screw-down crowns. Watch out: If you plan to swap dials or hands later, check whether your watch uses a 28.5 mm or 30.8 mm dial before ordering replacement parts. The wrong size will not fit. See our dial size guide for a full breakdown by model. Why Choose Nomods The Seiko modding market has many shops selling cases, dials, and parts. Nomods is one of the few that builds and ships fully assembled watches alongside the parts catalog — so you can buy a wearable watch on day one and still come back later for components if you want to learn to mod yourself. Build quality and parts: Every prebuilt Nomods watch is assembled in-house from sapphire crystals, original Seiko NH-series movements, and our own machined cases. The Petrichor line is an original Nomods design — not a homage to any existing luxury brand. We do not use Hardlex or mineral crystals in any prebuilt watch. Pricing: Prebuilt watches run from $180 to $390. Parts are priced individually so you can build to budget. Shipping is included in the li