Side by side

Redux Zero-HourvsLongines SPIRIT

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

Zero-Hour
ReduxZero-Hour
SPIRIT
LonginesSPIRIT
MSRP $2,550

At a glance

21 of 29 specs differ
Diameter
Zero-Hour39mm
SPIRIT40mm
Power Reserve
Zero-Hour41h
SPIRIT72h
Water Resistance
Zero-Hour200m
SPIRIT100m
MSRP
Zero-Hour
SPIRIT$2,550

Full specifications

Case

9 specs
Category
Sport
Diameter
39mm
40mm
Thickness
13.7mm
12.2mm
Lug-to-Lug
46.6mm
49.7mm
Lug Width
20mm
21mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Seiko NH35
L888.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
41h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$2,550

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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.

Longines SPIRIT

Owners widely praise the Longines SPIRIT 37mm for its excellent value, refined finishing, and vintage-inspired design, with many highlighting its applied Arabic numerals and appealing dials. The smooth winding action and technical capabilities like the 72-hour power reserve and silicon hairspring are also noted strengths. However, some owners find the bracelet to be "tinny" and light, and the lack of tool-less micro-adjustments on the bracelet is a recurring point of dissatisfaction. The date window at 3 o'clock is polarizing, with some disliking its placement and color, and the lugs are perceived by some as long for the case size. One owner expressed concern about the serviceability of the exclusive L888.4 movement. Overall, owners and reviewers consider the Longines SPIRIT a highly competent and well-executed watch for its price, with its design and finishing being the primary draws.

From video reviewers

The watch features a COSC-certified automatic movement. Reviewers noted the excellent finishing on the case and applied numerals. The lume brightness was cited as a weakness.

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