Side by side

Spinnaker Dumas GMTvsGruppo Gamma Field III

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Field III
Gruppo GammaField III
MSRP $439

At a glance

12 of 29 specs differ
Diameter
Dumas GMT44mm
Field III40mm
Power Reserve
Dumas GMT40h
Field III41h
Water Resistance
Dumas GMT300m
Field III200m
MSRP
Dumas GMT$399
Field III$439

Full specifications

Case

6 specs
Category
GMT
Field
Diameter
44mm
40mm
Thickness
15mm
14mm
Lug-to-Lug
48mm
48.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Blue
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Seiko NH34A
Seiko Instruments NH38A
Power Reserve
40h
41h

Pricing

1 specs
MSRP
$399
$439

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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.

Gruppo Gamma Field III

The watch's 200m water resistance is a notable strength. A weakness is the use of the Seiko NH34A GMT movement, which might be considered less desirable than some other options due to its relatively lower grade compared to other movements in this price range.

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