Seiko Prospex SeavsZelos Hammerhead V3 300m Bronze
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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

Hammerhead V3 300m Bronze
Diameter
43.5mm
44mm
Lug-to-Lug
51mm
n/a
Thickness
13.3mm
13mm
lowest
Water Resistance
200m
300m
highest
Power Reserve
70h
n/a
MSRP
$1,500
$449
lowest
Movement
Seiko 6R35
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 praise the Seiko Prospex Sea for its value and classic design, with reviewers highlighting its impressive case finishing and excellent LumiBrite lume. One owner found the watch to be a great first proper timepiece, while another noted it felt uncomfortably large, thick, and heavy on a 6.5-inch wrist. The hard-coated steel case offers scratch resistance. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its value and finishing.
Owners widely praise the Zelos Hammerhead V3 300m Bronze for its distinctive 70s-inspired design, slim 13.5mm case, and improved lume, offering a sophisticated timepiece at an accessible price point starting at $349. The unique dial is noted for evoking an otherworldly feeling, and the comfortable bracelet features on-the-fly micro-adjustment. Some enthusiasts express frustration with shipping delays and a desire to see the watch on a wrist before purchase. One owner flags that the clasp material could be more scratch-resistant, and resizing bracelet pins can be stubborn. On balance, owners rate the Zelos Hammerhead V3 300m Bronze highly for its unique design and build quality at its price point.
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