SEIKO Prospex Automatic Diver 300m SPB485J1

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SEIKO Prospex Automatic Diver 300m SPB485J1

SEIKO Prospex Automatic Diver 300m SPB485J1

Original price was: 1 200,00 €.Current price is: 790,00 €.

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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.

Availability: 1 in stock

Money-Back Guarantee If the watch doesn't match its description, return it for a full refund. No questions, no hassle.
Fully Insured Shipping Every watch ships with full insurance and tracking. Your purchase is protected door-to-door.
Ask Before You Buy Extra photos, measurements, movement shots — just ask. We answer every question personally.

Trusted by collectors worldwide · 500+ watches sold · How we authenticate

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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.

Every NOS Watches piece is assessed against a consistent grading standard before listing. What you see in the photos is exactly what you receive.

CaseNOS means no signs of wear; Old Stock means light patina consistent with age but no damage.
DialExamined under magnification. Any blemishes or patina are noted and photographed.
CrystalCondition noted in listing. Original crystals preserved where possible; replacements disclosed.
MovementServiced or tested as noted. Timing results and service history disclosed where available.
Bracelet / StrapOriginal where present. Condition, stretch, and clasp function noted in listing.
Box & PapersDisclosed in listing. Authenticity does not depend on papers for vintage pieces.

Questions? Contact us before buying — we welcome it.

1 review for SEIKO Prospex Automatic Diver 300m SPB485J1

  1. Rated 4 out of 5

    Alex, DE (verified owner) –

    Slightly bigger than I expected, but I got used to it quickly. Still very happy with the purchase.

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Frequently Asked Questions

Every watch is personally authenticated before listing. We have sold over 500 watches on eBay and Catawiki with near-perfect feedback. Additional photos always available on request.

NOS (New Old Stock) means the watch was produced decades ago but never sold or worn. Old Stock means minimal wear consistent with age only. We use these terms precisely.

Yes — worldwide, fully insured and tracked. All watches are securely packaged. Import duties may apply depending on your country.

If a watch does not match its description, full refund — no argument. Our reputation depends on honest dealing. Contact us directly with any concern.

Absolutely. We are happy to provide extra photos, measurements, or any information needed. Contact us anytime.

What Buyers Say

Real feedback from verified purchases on eBay & Catawiki

★★★★★

“Exactly as described — the watch arrived in perfect condition, beautifully packaged. Communication was excellent throughout. A genuinely trustworthy seller.”

M. Hartmann eBay verified buyer
★★★★★

“The NOS Longines was exactly what I’d been searching for. Superb condition, honest description, fast insured shipping. Will buy again without hesitation.”

P. Dubois Catawiki verified buyer
★★★★★

“Outstanding seller. Answered all my questions before purchase, provided extra photos, and the watch was even better in person. 100% recommend.”

R. van den Berg eBay verified buyer
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SEIKO Prospex Automatic Diver 300m SPB485J1SEIKO Prospex Automatic Diver 300m SPB485J1
Original price was: 1 200,00 €.Current price is: 790,00 €.

Availability: 1 in stock

Money-Back Guarantee If the watch doesn't match its description, return it for a full refund. No questions, no hassle.
Fully Insured Shipping Every watch ships with full insurance and tracking. Your purchase is protected door-to-door.
Ask Before You Buy Extra photos, measurements, movement shots — just ask. We answer every question personally.

Trusted by collectors worldwide · 500+ watches sold · How we authenticate