Oysteiko | Black

The SEIKOYS Mod Perpetual Black embodies the essence of a true modern tool watch —robust, refined, and ready for anything.Featuring a black dial with bold 3-6-9 indices, this model pays tribute to the timeless explorer style while maintaining the precision and craftsmanship that define Seiko mod culture.Powered by the Seiko NH35 automatic movement,it delivers mechanical reliability within a minimalist, highly legible design —perfect for everyday wear or adventure alike.

✅ Case Size: 39mm/36mm
✅ Case Thickness: 12mm
✅ Movement: SEIKO NH35 Automatic
✅ Crystal: Sapphire crystal with anti-reflective coating
✅ Material: 316L stainless steel
✅ Dial: Black dial with luminous indices
✅ Bezel: Smooth stainless steel bezel
✅ Bracelet: 316L stainless steel Oyster-style bracelet
✅ Lug Width: 20mm
✅ Caseback: Stainless steel screw-down
✅ Water Resistance: 5 ATM (50 m)

Each SEIKOYS Mod Perpetual Black is hand-built and regulated to ensure superior accuracy and craftsmanship.
Estimated handling time: 3 – 5 business days.

✔ Secure checkout
Ships with premium box and authenticity card
Optional logo engraving available
Backed by 2-year international warranty

Each watch is made to order. Assembly takes 3–5 business days before dispatch; delivery typically takes an additional 7–15 business days.

Tracked worldwide shipping is free. Read the destination details in our shipping policy.

Return conditions and exceptions for custom orders are explained in our returns policy.

Your custom watch includes a 2-year warranty. See the coverage and conditions in our warranty policy.

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