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Home/Browse/Seiko/Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition
Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition
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Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

Diver

The Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition is praised for its compact 40mm case and the new Caliber 6R55 movement offering a 72-hour power reserve. Owners and reviewers highlight the stunning dials as a strong suit for Seiko. However, the 6R movement's accuracy is a point of disappointment for some, who wish for improvements closer to other movements, though others accept it given the excellent overall package. Press images suggest the bracelet end links may appear disjointed. Overall, owners and reviewers rate the Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition well, with the stunning dials and improved power reserve being the biggest reasons.

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Prospex Sea The Black Series
1 Variant
Lume:LumiBrite on hands, index(es) and bezel
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Retail MSRP
$1,400
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Alternatives
Case
40mm
Power Reserve
72h
Movement
Automatic
Water Resistance
300m
Crystal
Sapphire + AR
01

Case Dimensions

Diameter40mm
Thickness13mm
Lug-to-Lug46.4mm
Lug Width20mm
02

Case Build

MaterialStainless Steel
Water Resistance300m
03

Crystal & Dial

CrystalSapphire
ShapeCurved
AR CoatingAnti-reflective coating on inner surface
LumeLumiBrite on hands, index(es) and bezel
04

Movement

Caliber
6R55
TypeAutomatic
Beat Rate—
Power Reserve72 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleSunburst
BezelRotating (dive)
Bracelet / strapLug-attached bracelet
HandsMercedes
AI-detected from product image · 5/22/2026
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