# Seiko Prospex Diver SPB143J1

Seiko Prospex Diver SPB143J1

This versatile timepiece reimagines Seiko's 1965 first diver's watch, an automatic timepiece with a then exceptional water resistance of 150 meters. Offering an extraordinarily legible dial and durable enough to become standard equipment on the Japanese Antarctic Research Expedition (JARE), this landmark timepiece propelled Seiko into the forefront of dive watch design.

**Movement**

Caliber Number

6R35

Movement Type

Automatic with manual winding

Precision

+25 to -15 seconds per day

Power reserve

Approx. 70 hours

Jewels

24

Functions

-   Stop seconds hand function
-   Date display

**Case/Band**

Case Material

Stainless steel (super hard coating)

Case Size

-   Thickness:13.2mm
-   Diameter:40.5mm
-   Lug-to-lug:47.6mm

Crystal

Curved sapphire crystal

Crystal Coating

Anti-reflective coating on inner surface

LumiBrite

LumiBrite on hands, indexes and bezel

Clasp

Three-fold clasp with secure lock , push button release with extender

Distance between lugs

20

**Other Details**

Weight

180.0

Features

-   Unidirectional rotating bezel
-   Screw-down crown
-   Three-fold clasp with secure lock
-   Screw case back

## Details

- **Price:** 1595.0 CAD
- **Vendor:** Bandiera Jewellers Fulfilled by EX-STOCK Canada
- **Type:** Seiko Watches
- **Tags:** removecollabs, Shopify Collective, www.bandierajewellers.com

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1595.00 CAD | In stock |

## Images

- Seiko Prospex Diver SPB143J1 - EX-STOCK Canada

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> Source: [EX-STOCK Canada](https://www.ex-stock.com/products/seiko-prospex-diver-spb143j1)
> Updated: 2026-07-14