Side by side

Oak & Oscar The Humboldt GMTvsRedux Zero-Hour

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

The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175
Zero-Hour
ReduxZero-Hour

At a glance

15 of 29 specs differ
Diameter
The Humboldt GMT39.5mm
Zero-Hour39mm
Power Reserve
The Humboldt GMT56 hoursh
Zero-Hour41h
Water Resistance
The Humboldt GMT200m
Zero-Hour200m
MSRP
The Humboldt GMT$2,175
Zero-Hour

Full specifications

Case

7 specs
Category
GMT
Diameter
39.5mm
39mm
Thickness
12.5mm
13.7mm
Lug-to-Lug
46.8mm
46.6mm
Material
316L Stainless Steel
Titanium
Finish
Brushed
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
White
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW330
Seiko NH35
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
41h

Pricing

1 specs
MSRP
$2,175

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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.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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.

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