Side by side

Sternglas Hamburg ChronovsRedux Zero-Hour

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

Hamburg Chrono
SternglasHamburg Chrono
MSRP $377
Zero-Hour
ReduxZero-Hour

At a glance

12 of 29 specs differ
Diameter
Hamburg Chrono42mm
Zero-Hour39mm
Power Reserve
Hamburg Chrono
Zero-Hour41h
Water Resistance
Hamburg Chrono50m
Zero-Hour200m
MSRP
Hamburg Chrono$377
Zero-Hour

Full specifications

Case

6 specs
Category
Chronograph
Diameter
42mm
39mm
Thickness
9.3mm
13.7mm
Lug-to-Lug
46mm
46.6mm
Material
Stainless Steel
Titanium
Water Resistance
50m
200m

Crystal & Dial

1 specs
Dial Color
Black

Movement

4 specs
Caliber
Seiko TMI VK64 Mecha-Quartz
Seiko NH35
Type
Quartz
Automatic
Power Reserve
41h
Jewels
25

Pricing

1 specs
MSRP
$377

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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.

Sternglas Hamburg Chrono

Owners widely praise the Sternglas Hamburg Chrono for its visually pleasing design, comfortable lightweight wear, and excellent timekeeping, with specific appreciation for details like the orange date window frame and overall value for the price. Some community members find the Regatta design busy and question the VK64 movement's lack of a running second hand, though others defend its unique, colorful aesthetic. One commenter notes the significant margin between manufacturing cost and retail price. On balance, owners rate the Sternglas Hamburg Chrono highly for its design details and value at its price point.

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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