# NAUTIKO | Open Heart Blue NH38 Seiko Mod

## Specifications & Material

-   **Diameter:**  41mm (excluding the crown)
-   **Movement:** TMI NH38 automatic movement
-   **Thickness:** 12mm
-   **Glass:** Sapphire
-   **Case:** 316L stainless steel
-   **Crown:** Screwed
-   **Wrist size:** 14,5cm to 22cm (adjustable)
-   **Lugs:** 20mm
-   **Bracelet:** stainless steel (with a butterfly style security clasp)
-   **Case back:** Crystal (seen movement) 
-   **Water resistance:** 3 ATM

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## Shipping

-   DHL International Express Shipping Available
    
-   Hand-assembled and fully quality checked before dispatch
    
-   Build time: 4–6 business days

## Details

- **Price:** 448.0 AUD
- **Vendor:** WATCHBRICK

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Heritage S | 448.00 AUD | In stock |

## Images

- Dark blue open-heart automatic watch with silver case and bracelet, striped dial design.
- NAUTIKO | Mod Open Heart Dark Blue - 418.00 WATCHBRICK
- NAUTIKO | Mod Open Heart Dark Blue - 418.00 WATCHBRICK

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> Source: [WATCHBRICK](seikomod.com.au/products/custom-mod-nautilus-open-heart-nh38)
> Updated: 2026-06-12