Side by side

Redux Zero-HourvsZelos Spearfish 3

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

Zero-Hour
ReduxZero-Hour
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

9 of 29 specs differ
Diameter
Zero-Hour39mm
Spearfish 340mm
Power Reserve
Zero-Hour41h
Spearfish 340h
Water Resistance
Zero-Hour200m
Spearfish 3200m
MSRP
Zero-Hour
Spearfish 3$749

Full specifications

Case

5 specs
Category
Diver
Diameter
39mm
40mm
Thickness
13.7mm
11.5mm
Lug-to-Lug
46.6mm
40mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
Black
Diver - Forged Carbon

Movement

2 specs
Caliber
Seiko NH35
La Joux-Perret G100
Power Reserve
41h
40h

Pricing

1 specs
MSRP
$749

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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.

Zelos Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

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