Side by side

Spinnaker HullvsGruppo Gamma Field III GMT

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

Hull
SpinnakerHull
MSRP $159
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

13 of 29 specs differ
Diameter
Hull42mm
Field III GMT40mm
Power Reserve
Hull40h
Field III GMT41h
Water Resistance
Hull100m
Field III GMT200m
MSRP
Hull$159
Field III GMT$459

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
42mm
40mm
Thickness
15mm
14mm
Lug-to-Lug
47.5mm
48.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
SII NH35A
Seiko Instruments NH38A
Power Reserve
40h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$159
$459

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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 Hull

The Spinnaker Hull is widely praised by owners for its textured or deep sandwich dials, bold cushion case design, and vintage charm, with one owner finding its jubilee bracelet superior to Seiko's. The meca-quartz movement is a common feature, and the watch offers 100m water resistance. However, the 24-hour subdial is considered functionally illogical and visually unappealing by one owner, and the mineral crystal is noted as a drawback compared to sapphire. On balance, owners rate the Spinnaker Hull highly for its significant style and value at its budget price point.

From video reviewers

The watch's lume is a strong point. Reviewers noted the absence of a sapphire crystal as a drawback.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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