Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited EditionvsZelos Swordfish 3
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

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

Swordfish 3
Diameter
40mm
40mm
Lug-to-Lug
46.4mm
n/a
Thickness
13mm
12mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
72h
n/a
MSRP
$1,400
$399
lowest
Movement
Seiko 6R55
Seiko NH35
Case
4 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers praise the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition for its compact 40mm case and improved 300-meter water resistance. The new Caliber 6R55 movement offers a 72-hour power reserve, though some owners express disappointment with its accuracy compared to ETA movements, while others accept it given Seiko's strong dial design. Press images show a disjointed fit on the bracelet's end links. Overall, owners and reviewers rate the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition highly for its design and wearability, despite some reservations about the movement's accuracy.
Owners and reviewers widely praise the Zelos Swordfish 3 for its exceptional value, with many highlighting the textured sandwich dial and the surprisingly good bracelet. The watch's 40mm case dimensions are considered fine for wearability, and its titanium construction contributes to a compact and comfortable feel. Some owners appreciate the unique appeal of specific dials, such as the teal or yellow Timascus variants. One reviewer noted sharp bracelet edges and legibility issues in bright light on a specific variant. Overall, owners and reviewers rate the Zelos Swordfish 3 highly for its strong value proposition and fun design elements at its price point.
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