Side by side

Spinnaker Dumas GMTvsZelos Hammerhead V3 300m Titanium

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

8 of 29 specs differ
Diameter
Dumas GMT44mm
Hammerhead V3 300m Titanium44mm
Power Reserve
Dumas GMT40h
Hammerhead V3 300m Titanium40h
Water Resistance
Dumas GMT300m
Hammerhead V3 300m Titanium300m
MSRP
Dumas GMT$399
Hammerhead V3 300m Titanium$559

Full specifications

Case

4 specs
Category
GMT
Diver
Thickness
15mm
13mm
Lug-to-Lug
48mm
44mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Blue
Ti - Mosaic MOP

Movement

1 specs
Caliber
Seiko NH34A
Seiko NH35

Pricing

1 specs
MSRP
$399
$559

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

Zelos Hammerhead V3 300m Titanium

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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