Side by side

Spinnaker Dumas GMTvsSeiko Coutura

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Coutura
SeikoCoutura
MSRP $450

At a glance

11 of 29 specs differ
Diameter
Dumas GMT44mm
Coutura33.7mm
Power Reserve
Dumas GMT40h
Coutura40h
Water Resistance
Dumas GMT300m
Coutura100m
MSRP
Dumas GMT$399
Coutura$450

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
44mm
33.7mm
Thickness
15mm
8.4mm
Lug-to-Lug
48mm
40.3mm
Lug Width
22mm
16mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Blue
Black
Lume
None
LumiBrite on Hands

Movement

1 specs
Caliber
Seiko NH34A
6N42

Pricing

1 specs
MSRP
$399
$450

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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.

Seiko Coutura

Owners widely praise the Seiko Coutura for its wear-resistant metal treatments, with one reporting minimal scratching after six years. Its solar and perpetual calendar features are noted for reliability and low maintenance, and some find its aesthetic captivating with attractive gold indices and a contrasting black dial, making it a daily driver. However, opinions on styling are split; some find the dial too busy and the gold tone unconvincing, while others appreciate its unique, fun design. The proprietary bracelet is a common point of contention, with several owners expressing dislike. One owner reports poor solar power reserve requiring constant light exposure, and another found the watch sits too high and looks "horrendous" in person. Overall, owners value the Seiko Coutura for its solar and perpetual calendar complications and durable construction, despite polarizing styling and bracelet design.

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