Nautiko | (Open Heart) Dark Blue
Complete your watch
Estimated arrival: 10–20 business days
Includes assembly and delivery. Timing may vary by destination.14-day returns on unworn standard watches. Personalised orders excluded.
✔ 2-Year Warranty
★ Premium Box Packaging
✈︎ Free Worldwide Shipping
At a glance
- Case size
- 41mm
- Movement
- Seiko NH38 automatic movement
- Glass
- Sapphire, anti-scratch
- Case & bracelet
- 316L stainless steel
- Water resistance
- 5 ATM
- Assembly
- 3–5 business days
- Delivery
- 7–15 business days after dispatch
Description
The SEIKNAUT MOD Nautilus Open Heart Dark Blue brings together refined design and mechanical artistry. Its deep navy blue dial, paired with a striped texture, delivers a bold yet elegant presence on the wrist. The signature open-heart window reveals part of the Seiko NH38 movement, giving the watch a dynamic and technical character.Crafted from solid 316L stainless steel with a polished integrated bracelet, this model offers a sleek contemporary silhouette. Its combination of mechanical exposure, clean lines, and dark-blue color palette makes it a standout choice for those who appreciate both luxury aesthetics and true mechanical craftsmanship.
✅ Case Size: 41mm
✅ Case Thickness: 12mm
✅ Case Material: 316L Stainless Steel
✅ Dial: Dark blue with striped texture + open-heart display
✅ Crystal: Sapphire crystal with anti-reflective coating
✅ Movement: Seiko NH38 Automatic (open-heart)
✅ Water Resistance: 5 ATM (50 m)
✅ Bracelet: Integrated stainless steel bracelet
✅ Bracelet Color: Silver
✅ Lug Width: 22mm
✅ Caseback: Exhibition (open) stainless steel
✅ Functions: Hours, minutes, seconds
Processing Time: 2–4 business days
Standard Shipping: 7–12 business days
Express Shipping: 3–7 business days
Worldwide tracking included
Shipping & returns
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.
Warranty & support
Your custom watch includes a 2-year warranty. See the coverage and conditions in our warranty policy.
Need help choosing? Contact Watcheray.
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