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

At MSRP the Spinnaker Noir Radiance is the cheaper of the two at $420, against $900 for the Seiko Prospex Sea — a $480 gap before any retailer discounting.

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

The Spinnaker Noir Radiance wears larger at 42mm versus 41mm for the Seiko Prospex Sea — a 1mm difference across the dial.

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

The Seiko Prospex Sea 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 Seiko Prospex Sea carries a 70-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?

Both watches run automatic movements — the Spinnaker Noir Radiance uses the SII NH35A and the Seiko Prospex Sea uses the 6R35.

Side by side

Spinnaker Noir RadiancevsSeiko Prospex Sea

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

Spinnaker Noir Radiance

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

MSRP $420

Seiko Prospex Sea

spb317j1

MSRP $900

At a glance

14 of 29 specs differ

Diameter

Noir Radiance42mm

Prospex Sea41mm

Power Reserve

Noir Radiance40h

Prospex Sea70h

Water Resistance

Noir Radiance180m

Prospex Sea200m

MSRP

Noir Radiance$420

Prospex Sea$900

Full specifications

Case

6 specs

Diameter

42mm

41mm

Thickness

15mm

12.3mm

Lug-to-Lug

50mm

46.9mm

Lug Width

22mm

20mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

180m

200m

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

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

SII NH35A

6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$420

$900

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Spinnaker Noir RadiancevsSeiko Prospex Sea

At a glance

Full specifications

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