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Home/Browse/Spinnaker/Dumas GMT
Spinnaker Dumas GMT — Ocean Blue
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Spinnaker Dumas GMT

GMTMicrobrand

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.

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Dumas Automatic
Dumas GMT
9 Variants
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Retail MSRPIn stock
$399
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Alternatives
Case
44mm
Power Reserve
—
Movement
Automatic
Water Resistance
300m
Crystal
Sapphire
01

Case Dimensions

Diameter44mm
Thickness15mm
Lug-to-Lug48mm
Lug Width22mm
02

Case Build

Material316L Stainless Steel
Water Resistance300m
03

Crystal & Dial

CrystalSapphire
Dial ColorOcean Blue
04

Movement

Caliber
Seiko NH34
TypeAutomatic
Beat Rate—
Power Reserve—
Jewels—
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleSunburst
Bezel24-hour (GMT)
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026

Photos

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