Which is cheaper, the Spinnaker Noir Radiance or the Seiko Prospex Sea The Black Series?

At MSRP the Spinnaker Noir Radiance is the cheaper of the two at $420, against $765 for the Seiko Prospex Sea The Black Series — a $345 gap before any retailer discounting.

Which is bigger, the Spinnaker Noir Radiance or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series wears larger at 45mm versus 42mm for the Spinnaker Noir Radiance — a 3mm difference across the dial.

Which has better water resistance, the Spinnaker Noir Radiance or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series is rated to 200m versus 180m for the Spinnaker Noir Radiance.

Which has a longer power reserve, the Spinnaker Noir Radiance or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series carries a 41-hour power reserve against 40 hours on the Spinnaker Noir Radiance.

What movement does the Spinnaker Noir Radiance run compared to the Seiko Prospex Sea The Black Series?

Both watches run automatic movements — the Spinnaker Noir Radiance uses the NH35 and the Seiko Prospex Sea The Black Series uses the Seiko 4R36.

Side by side

Spinnaker Noir RadiancevsSeiko Prospex Sea The Black Series

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

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Spinnaker Noir Radiance

bradner-automatic-noir-radiance-sp-5062-44

MSRP $420

See the full Noir Radiance

Seiko Prospex Sea The Black Series

srpk43

MSRP $765

See the full Prospex Sea The Black Series

At a glance

12 of 29 specs differ

Diameter

Noir Radiance42mm

Prospex Sea The Black Series45mm

Power Reserve

Noir Radiance40h

Prospex Sea The Black Series41h

Water Resistance

Noir Radiance180m

Prospex Sea The Black Series200m

MSRP

Noir Radiance$420

Prospex Sea The Black Series$765

Full specifications

Case

5 specs

Diameter

42mm

45mm

Thickness

15mm

13.2mm

Lug-to-Lug

50mm

47.7mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

180m

200m

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Noir Radiance

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

NH35

Seiko 4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$420

$765

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Spinnaker Noir RadiancevsSeiko Prospex Sea The Black Series

At a glance

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