Which is cheaper, the Grand Seiko SBGA384 or the Spinnaker Spence 300?

At MSRP the Spinnaker Spence 300 is the cheaper of the two at $650, against $29,500 for the Grand Seiko SBGA384 — a $28,850 gap before any retailer discounting.

Which has better water resistance, the Grand Seiko SBGA384 or the Spinnaker Spence 300?

The Spinnaker Spence 300 is rated to 300m versus 100m for the Grand Seiko SBGA384.

Which has a longer power reserve, the Grand Seiko SBGA384 or the Spinnaker Spence 300?

The Grand Seiko SBGA384 carries a 72-hour power reserve against 40 hours on the Spinnaker Spence 300.

What movement does the Grand Seiko SBGA384 run compared to the Spinnaker Spence 300?

The Grand Seiko SBGA384 runs a spring drive caliber (9R15), while the Spinnaker Spence 300 runs a automatic (SII NH35A).

Side by side

Grand Seiko SBGA384vsSpinnaker Spence 300

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

Grand Seiko SBGA384

sbga384g

MSRP $29,500

Spinnaker Spence 300

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

MSRP $650

At a glance

12 of 29 specs differ

Diameter

SBGA38440mm

Spence 30040mm

Power Reserve

SBGA38472h

Spence 30040h

Water Resistance

SBGA384100m

Spence 300300m

MSRP

SBGA384$29,500

Spence 300$650

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Yes

Inner

Dial Color

Black

Aquamarine

Movement

3 specs

Caliber

9R15

SII NH35A

Type

Spring Drive

Automatic

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$29,500

$650

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Grand Seiko SBGA384vsSpinnaker Spence 300

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