Audaz Reef DivervsZelos Hammerhead V3 300m Titanium
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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.

Reef Diver

Hammerhead V3 300m Titanium
Diameter
45mm
44mm
Lug-to-Lug
53mm
n/a
Thickness
15.5mm
13mm
lowest
Water Resistance
300m
300m
MSRP
$420
lowest
$559
Movement
Seiko NH35
Seiko NH35
Case
5 specsCrystal & Dial
3 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Audaz Reef Diver is a bold, rugged tool watch with a focus on clarity and accuracy for diving. It features a 45mm 316L stainless steel case, sapphire crystal, Super-LumiNova C3, and 300m water resistance. One owner notes it is a large, heavy watch. The Audaz Reef Diver is available with a Seiko NH35 automatic movement starting at $269. On balance, owners and reviewers view the Audaz Reef Diver positively for its dependable tool-watch design and robust specifications at its price point.
The Zelos Hammerhead V3 300m Titanium is widely praised for its exceptional lume, unique and beautiful dial finishing that reflects light dramatically, and solid build quality that exceeds its price point. Owners also highlight its comfortable wearability, especially the lightweight titanium variant, and the convenient on-the-fly micro-adjustment on the bracelet. One owner notes the Japanese movement performs better than anticipated, and the Ti-Damascus variant features a unique, patterned dial and bezel. However, some owners find the 44mm size large, the crown "off," and the bracelet clasp could be more scratch-resistant, with resizing pins described as stubborn. Reattaching the bracelet after removal is also noted as extremely difficult. Overall, owners rate the Zelos Hammerhead V3 300m Titanium highly for its impressive dial aesthetics and value for money.
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