Nautiko | (Open Heart)Black

A bold statement in dark luxury, the SEIKONAT MOD Nautilus (Open Heart)Black boasts a full black IP coating case and integrated bracelet. This timepiece features the SEIKO NH38 automatic movement and an open-heart dial design that shows the intricate inner workings of the watch.The dial is designed with horizontal ridges to give it a modern, sleek appearance while the hands and markers are luminescent for legibility in low light.Perfect for anyone who enjoys understated elegance with an industrial flair, this model has been designed for those who seek sophistication and style.

✅ Case Size: 41mm
✅ Case Thickness: 12mm
✅ Lug Width: 20mm
✅ Case Material: Black IP Stainless Steel
✅ Dial Color: Black
✅ Crystal: Hardlex Mineral
✅ Movement: SEIKO NH38 Automatic
✅ Water Resistance: 5 ATM (50 m)
✅ Strap Material: Black Stainless Steel Bracelet
✅ Clasp: Butterfly Clasp
✅ Caseback: Exhibition (Open Caseback)
✅ Features: Date display, luminous hands & markers

Processing Time: 2–4 business days
Standard Shipping: 7–12 business days
Express Shipping: 3–7 business days
Worldwide tracking included

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.

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