Diameter: 40mm – Balanced size that complements a wide range of wrist profiles
Movement: Seiko NH35 Automatic – Proven, reliable movement with smooth, sweeping seconds
Case Material: 316L Stainless Steel – High-grade steel with brushed and polished accents
Crystal: Sapphire Crystal Glass – Scratch-resistant for clear, long-lasting visibility
Water Resistance: 5 ATM – Handles splashes and rain when crown is properly secured (not suitable for swimming)
Luminous Hands & Markers: Yes – Designed for legibility in low-light settings
Caseback: Exhibition (Opened) – Display the movement through a clear caseback window
Bracelet: Integrated Stainless Steel Bracelet – Signature Nautilus-style design for comfort and elegance
Warranty: 1 Year Limited Warranty* – Reliable support for your investment
Whether you're stepping into the world of luxury-inspired mods or adding a minimalist icon to your collection, the Nautilus Mod blends classic aesthetics with modern dependability.
Note: Watch colors may appear slightly different under various lighting condition
All watches sold by Watchkraft are aftermarket custom builds using genuine movements and third-party mod components. We are not affiliated with Seiko Holdings Corporation or any other brands.
Each timepiece is carefully assembled and tested by our team to ensure quality and functionality, but as these are modified/custom watches, they do not carry Seiko’s original manufacturer warranty.
We offer our own 1-Year Limited Warranty covering movement functionality and assembly defects (see warranty terms for full details). Please note that water resistance is not guaranteed, Our watches are rated at 5 ATM water resistance, meaning they are suitable for light splashes and rain only when the crown is properly screwed down.
If the crown is left unscrewed or not secured tightly, water may enter the case, potentially damaging the movement. This is considered user error and is not covered under warranty. We strongly advise avoiding submersion, swimming, or showering with any modded watch, regardless of its rating.
Due to lighting, screen settings, and handcrafted assembly, slight variations in color, finish, or alignment may occur. All sales are considered final unless otherwise stated.
If you have any questions before purchasing or would like a custom build, feel free to contact us directly or send a DM via Instagram.