Side by side

Spinnaker Dumas GMTvsZelos Hammerhead V3 300m Bronze

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 Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

8 of 29 specs differ
Diameter
Dumas GMT44mm
Hammerhead V3 300m Bronze44mm
Power Reserve
Dumas GMT40h
Hammerhead V3 300m Bronze40h
Water Resistance
Dumas GMT300m
Hammerhead V3 300m Bronze300m
MSRP
Dumas GMT$399
Hammerhead V3 300m Bronze$449

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
Bronze - Frost

Movement

1 specs
Caliber
Seiko NH34A
Seiko NH35

Pricing

1 specs
MSRP
$399
$449

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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 Bronze

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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