Side by side

Redux Zero-HourvsSeiko Prospex Sea

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

Zero-Hour
ReduxZero-Hour
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

11 of 29 specs differ
Diameter
Zero-Hour39mm
Prospex Sea43.8mm
Power Reserve
Zero-Hour41h
Prospex Sea41h
Water Resistance
Zero-Hour200m
Prospex Sea200m
MSRP
Zero-Hour
Prospex Sea$625

Full specifications

Case

6 specs
Category
Diver
Diameter
39mm
43.8mm
Thickness
13.7mm
12.8mm
Lug-to-Lug
46.6mm
48.7mm
Lug Width
20mm
22mm
Material
Titanium
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

2 specs
Caliber
Seiko NH35
4R35
Jewels
25
23

Pricing

1 specs
MSRP
$625

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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 Type 39MM for its robust, no-nonsense design and good overall quality, with a reliable Seiko NH53A movement keeping time well. The titanium case and crystal have shown scratch resistance, and the bezel action is described as tight by some. Reviewers note the proprietary RDXB1 or blue lume glows brilliantly, though briefly. Some owners flag the crown stem as flimsy and the unidirectional bezel as having some play. Overall, owners rate the Redux Courg Type 39MM highly for its functional tool-watch design and durable titanium construction.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

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