Side by side

Redux Zero-HourvsGrand Seiko SLGH017

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

Zero-Hour
ReduxZero-Hour
SLGH017
Grand SeikoSLGH017
MSRP $10,500

At a glance

10 of 29 specs differ
Diameter
Zero-Hour39mm
SLGH01740mm
Power Reserve
Zero-Hour41h
SLGH01780h
Water Resistance
Zero-Hour200m
SLGH017100m
MSRP
Zero-Hour
SLGH017$10,500

Full specifications

Case

6 specs
Category
Dress
Diameter
39mm
40mm
Thickness
13.7mm
11.7mm
Lug-to-Lug
46.6mm
47mm
Lug Width
20mm
22mm
Water Resistance
200m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
Seiko NH35
9SA5
Power Reserve
41h
80h

Pricing

1 specs
MSRP
$10,500

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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.

Grand Seiko SLGH017

Grand Seiko SLGH017 owners and reviewers widely praise its impeccable finishing on the applied markers and handset, and its lightweight titanium case and bracelet. The high-beat 9SA5 movement is noted for its approximately 80-hour power reserve, with accuracy figures reported by owners ranging from +4 sec/day to +5 to -3 seconds per day, though some owners express concerns about accuracy deviating significantly from specifications. Some find the "Night Birch" dial stunning and appreciate the Evo 9 case design, while others note the dial texture appears less pronounced on its matte black surface and criticize the handset's proportions and lack of lume. The Grand Seiko SLGH017 is priced at €10,500. On balance, owners and reviewers rate the Grand Seiko SLGH017 highly for its lightweight titanium construction and impeccable finishing.

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