Side by side

Spinnaker Dumas GMTvsZelos Helica

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Helica
ZelosHelica
MSRP $499

At a glance

9 of 29 specs differ
Diameter
Dumas GMT44mm
Helica39mm
Power Reserve
Dumas GMT40h
Helica40h
Water Resistance
Dumas GMT300m
Helica100m
MSRP
Dumas GMT$399
Helica$499

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
44mm
39mm
Thickness
15mm
10.5mm
Lug-to-Lug
48mm
39mm
Lug Width
22mm
20mm
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Blue
39 - Wave MOP

Movement

1 specs
Caliber
Seiko NH34A
Miyota 9015

Pricing

1 specs
MSRP
$399
$499

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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 Helica

Owners widely praise the Zelos Helica for its stunning, often color-shifting dials, with specific mentions of the MoP, slate grey, 'Steel Blue', and red opal variants being particularly captivating and artful. The 39mm case size is noted as fitting well on smaller wrists, and the overall build quality and finishing for the price are frequently highlighted as impressive, with one owner calling it "a lot of watch for the price." Some owners appreciate the novel bracelet designs and full lume dials, while others find the bracelet and clasp edges sharp or the clasp lacking on-the-fly adjustment. Opinions on the date window are mixed, with one owner disliking it. The Zelos Helica Moonphase was considered cluttered by one owner, and its $1K USD price point was felt to be steep by another, though popular variants sold out rapidly. Overall, owners rate the Zelos Helica highly for its striking dial designs and impressive value proposition.

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