Skip to content
1 live drop Cart
STOCK 2074 · SPB485J1

SEIKO Prospex Automatic Diver 300m SPB485J1

790 €

RRP 1 240 € 450 € below RRP

Factory-new, never worn. Checked by hand in six steps.

Availability: 1 in stock

Ask a question
  • Authenticity guaranteed
  • Secure checkout via Stripe
  • 14-day returns
  • Free worldwide shipping over 500 €

Delivery: insured, tracked shipping worldwide.

1,500+ watches sold on eBay, Catawiki and to private clients. Reviews

Condition and what’s included

Stock cardNO. 2074
Condition
New old stock: factory-new, never sold or worn.
Wear
NOS means unworn with no case wear. Every flaw is described.
Included
Listed for this watch in the description.
Checked
By hand, in six steps, before it was listed.
Returns
14 days. If a watch doesn’t match its description, we make it right.

No wear. No second owner. Just a watch exactly as it left the factory.

From our About page

Brand new Seiko Prospex Diver 300m SPB485J1 powered by Seiko’s Caliber 6R35 automatic movement with approx. 70-hour power reserve. 42mm stainless steel case, scratch-resistant sapphire crystal, and 300m water resistance.

The Seiko Prospex SPB485J1 Automatic Diver 300m is a modern interpretation of Seiko’s heritage dive watches, combining professional-grade specifications with refined everyday wearability.

Designed for the demands of serious diving, this model features a 42mm stainless steel case and a unidirectional rotating bezel, paired with a clean black dial optimized for maximum legibility. Lumibrite-coated hands and markers ensure excellent visibility in low-light and underwater conditions.

Powered by Seiko’s in-house Caliber 6R35 automatic movement, this diver offers a robust approximate 70-hour power reserve, an exceptional performance for a mechanical dive watch in its class.

With a 300 meters water resistance rating and a scratch-resistant sapphire crystal, the SPB485J1 is engineered for both recreational and professional diving, yet its balanced design makes it equally suited for daily wear.

This model embodies Seiko’s Prospex philosophy: durable construction, thoughtful design, and trusted precision.

Key Specifications:

  • Reference: SPB485J1

  • Movement: Automatic (Seiko Caliber 6R35)

  • Power Reserve: Approx. 70 hours

  • Case Size: 42mm

  • Case Material: Stainless Steel

  • Crystal: Sapphire

  • Water Resistance: 300m

  • Bracelet: Stainless Steel

  • Condition: Brand New

All watches are carefully inspected prior to shipping.

Checked by hand in six steps.

Every watch is checked by hand before it is listed. This one went through all six. How we authenticate

  1. Physical inspection

    In hand, under magnification: case, lugs, crown and caseback.

  2. Dial and hands

    Under a loupe for printing, fonts, lacquer and originality.

  3. Movement

    Caseback opened where possible, calibre matched to the model.

  4. Reference

    Cross-checked against catalogues, collector databases and known-good examples.

  5. Condition grading

    NOS means unworn with no case wear. Every flaw is described.

  6. Documentation

    Case, dial, movement, clasp and what is included, all in the listing.

Before and after you buy

The quiet part of a good purchase.

Free worldwide shipping over 500 €

Insured, tracked shipping worldwide.

14-day returns

If a watch doesn’t match its description, we make it right.

Secure checkout via Stripe

Pay by card, Apple Pay or Google Pay.

Real people

We answer every question personally, before and after the sale. We’re real people and we reply fast.

Privacy PolicyRefund & ReturnsShopContact