Which is bigger, the Redux Zero-Hour or the Spinnaker Spence 300?

The Spinnaker Spence 300 wears larger at 40mm versus 39mm for the Redux Zero-Hour — a 1mm difference across the dial.

Which has better water resistance, the Redux Zero-Hour or the Spinnaker Spence 300?

The Spinnaker Spence 300 is rated to 300m versus 200m for the Redux Zero-Hour.

Which has a longer power reserve, the Redux Zero-Hour or the Spinnaker Spence 300?

The Redux Zero-Hour carries a 41-hour power reserve against 40 hours on the Spinnaker Spence 300.

What movement does the Redux Zero-Hour run compared to the Spinnaker Spence 300?

Both watches run automatic movements — the Redux Zero-Hour uses the Seiko NH35 and the Spinnaker Spence 300 uses the SII NH35A.

Side by side

Redux Zero-HourvsSpinnaker Spence 300

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

Redux Zero-Hour

the-courg-watch-zero-hour-39mm

Spinnaker Spence 300

spence-300-automatic-aquamarine-sp-5097-aa

MSRP $650

At a glance

10 of 29 specs differ

Diameter

Zero-Hour39mm

Spence 30040mm

Power Reserve

Zero-Hour41h

Spence 30040h

Water Resistance

Zero-Hour200m

Spence 300300m

MSRP

Zero-Hour—

Spence 300$650

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Black

Aquamarine

Movement

2 specs

Caliber

Seiko NH35

SII NH35A

Power Reserve

41h

40h

Pricing

1 specs

MSRP

—

$650

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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.

Reddit·2

WatchUSeek

Spinnaker Spence 300

The Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

Fratello

WatchUSeek

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