# Seiko Prospex Green Sumo Diver's Watch SPB103J1

## Seiko Prospex Green Sumo Diver’s Watch SPB103J1

Legendary in the dive watch world, the **Seiko Prospex Green Sumo SPB103J1** commands attention with its bold 45mm stainless steel case, striking green dial, and LumiBrite-coated unidirectional bezel. Powered by the reliable 6R35 automatic caliber with a 70-hour power reserve, this is a serious diver’s tool watch with iconic status — available at **EX-STOCK Canada**. Explore our full [Wrist Watch Collections](/collections/492008177938).

### Movement

-   **Caliber:** 6R35
-   **Type:** Automatic with manual winding
-   **Precision:** +25 to -15 seconds per day
-   **Power Reserve:** Approx. 70 hours
-   **Jewels:** 24
-   **Functions:** Date display, stop-second hand

### Case & Band

-   **Case Material:** Stainless steel
-   **Case Diameter:** 45.0mm
-   **Case Thickness:** 12.9mm
-   **Lug-to-Lug:** 52.6mm
-   **Lug Width:** 20mm
-   **Crystal:** Sapphire
-   **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 diver’s
-   **Weight:** 188g

### Perfect For

The iconic choice for serious divers and Seiko collectors. Browse our [Watch Accessories](/collections/485390778642) to complete your Prospex Sumo setup.

![Seiko Prospex Green Sumo diver's watch SPB103J1 45mm stainless steel](https://cdn.shopify.com/s/files/1/0715/8595/6114/files/SEIKO_SPB103J1.jpg?v=1766480048)

## Details

- **Price:** 1095.0 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 | 1095.00 CAD | In stock |

## Images

- Seiko Prospex Divers GREEN  'Sumo" Mens Watch SPB103J1 - EX-STOCK Canada

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> Source: [EX-STOCK Canada](https://www.ex-stock.com/products/seiko-prospex-divers-green-sumo-mens-watch-spb103j1)
> Updated: 2026-07-14