# Seiko Prospex 3-Day GMT Diver's Watch SPB381J1

## Seiko Prospex 3-Day GMT Diver’s Watch SPB381J1

For the adventurer who refuses to be bound by a single time zone, the **Seiko Prospex SPB381J1** delivers a powerful combination of GMT functionality and 200-metre diver’s water resistance. The green dial and green ceramic rotating bezel give this 42mm powerhouse an unmistakable presence on the wrist — available at **EX-STOCK Canada**. Explore our full [Wrist Watch Collections](/collections/492008177938).

### Movement

-   **Caliber:** 6R54
-   **Type:** Automatic with manual winding
-   **Precision:** +25 to -15 seconds per day
-   **Power Reserve:** Approx. 72 hours (3 days)
-   **Jewels:** 24
-   **Functions:** 24-hour GMT hand, stop-second hand

### Case & Band

-   **Case Material:** Stainless steel; bezel: stainless steel with ceramic insert
-   **Case Diameter:** 42.0mm
-   **Case Thickness:** 12.9mm
-   **Lug-to-Lug:** 48.6mm
-   **Lug Width:** 20mm
-   **Crystal:** Sapphire with inner antireflective coating
-   **Lume:** LumiBrite on hands, indices, and bezel
-   **Clasp:** Three-fold with secure lock, push-button release & extender
-   **Bezel:** Unidirectional rotating
-   **Crown:** Screw-down
-   **Case Back:** Screw-down

### Additional Specifications

-   **Water Resistance:** 200m / 660ft diver’s
-   **Magnetic Resistance:** 4,800 A/m
-   **Weight:** 176g

### Perfect For

The ultimate GMT dive watch for serious adventurers and collectors. Browse our [Watch Accessories](/collections/485390778642) to complete your Prospex setup.

![Seiko Prospex 3-Day GMT diver's watch SPB381J1 42mm green ceramic bezel](https://cdn.shopify.com/s/files/1/0715/8595/6114/files/SEIKO_SPB381J1.jpg?v=1766480076)

## Details

- **Price:** 2150.0 CAD
- **Vendor:** Bandiera Jewellers Fulfilled by EX-STOCK Canada
- **Type:** Luxury Watch
- **Tags:** removecollabs, Shopify Collective, www.bandierajewellers.com

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2150.00 CAD | In stock |

## Images

- Seiko Prospex 3-Day GMT SPB381J1 - EX-STOCK Canada

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> Source: [EX-STOCK Canada](https://www.ex-stock.com/products/seiko-prospex-3-day-gmt-spb381j1)
> Updated: 2026-07-14