Side by side

Redux Zero-HourvsGruppo Gamma Field III GMT

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

Zero-Hour
ReduxZero-Hour
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

12 of 29 specs differ
Diameter
Zero-Hour39mm
Field III GMT40mm
Power Reserve
Zero-Hour41h
Field III GMT41h
Water Resistance
Zero-Hour200m
Field III GMT200m
MSRP
Zero-Hour
Field III GMT$459

Full specifications

Case

6 specs
Category
GMT
Diameter
39mm
40mm
Thickness
13.7mm
14mm
Lug-to-Lug
46.6mm
48.5mm
Lug Width
20mm
22mm
Material
Titanium
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Seiko NH35
Seiko Instruments NH38A
Power Reserve
41h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$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.

Redux Zero-Hour

Owners widely praise the Redux Courg Zero Hour 39MM for its robust, utilitarian design inspired by pilot and dive tools, its lightweight Grade 5 titanium construction, and its comfortable wearability. The proprietary RDXB1 lume is noted for its bright initial glow, though it fades quickly. The Seiko NH53A or NH35 movement is generally considered reliable. However, multiple owners report a flimsy or fragile crown stem, and some describe the unidirectional bezel as having play or being able to rotate clockwise by one minute, though one owner reported a tight bezel with no play. The 39mm case size is considered good by some, while others find it small for larger wrists or note it looks large, with some desiring a 42mm option. One owner found the titanium finish looked slightly cheap and wished for a bezel insert. The dial is described by one owner as too busy for easy reading without glasses. The Redux Courg Zero Hour 39MM is available for $300, down from an original price of $507.

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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