Seikonaut – Black & Gold Skeleton Seiko Mod with Black Strap (40mm)

This 40mm Seikonaut is built for bold wrists and clean aesthetics. The matte black PVD case sets a stealthy foundation for the polished gold skeleton dial, while the all-black rubber strap keeps the look tight, modern, and cohesive.

Driven by the Seiko NH72 movement, the openworked dial reveals the mechanical inner structure of the watch — from the balance wheel to the gear train and bridges. It’s a complete visual upgrade over a standard Seiko dial, and delivers far more drama than the partial view of a typical Seiko Nautilus open heart mod.

Gold accents float over the exposed golden mechanics, giving this build a refined, almost industrial character that feels equally suited to dressed-up or everyday wear. The symmetry, depth, and contrast give this mod serious presence.

Compatible with all premium Seiko mod watches components, this Seikonaut is ideal for anyone building a high-impact, high-precision skeleton piece — without sacrificing wearability or edge.