Which is cheaper, the Casio GG-B100XM or the Spinnaker Dumas Automatic?

At MSRP the Spinnaker Dumas Automatic is the cheaper of the two at $239, against $440 for the Casio GG-B100XM — a $201 gap before any retailer discounting.

Which is bigger, the Casio GG-B100XM or the Spinnaker Dumas Automatic?

The Casio GG-B100XM wears larger at 51.3mm versus 44mm for the Spinnaker Dumas Automatic — a 7.3mm difference across the dial.

Which has better water resistance, the Casio GG-B100XM or the Spinnaker Dumas Automatic?

The Spinnaker Dumas Automatic is rated to 300m versus 200m for the Casio GG-B100XM.

What movement does the Casio GG-B100XM run compared to the Spinnaker Dumas Automatic?

The Casio GG-B100XM runs a quartz caliber, while the Spinnaker Dumas Automatic runs a automatic (Seiko NH35).

Side by side

Casio GG-B100XMvsSpinnaker Dumas Automatic

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

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Casio GG-B100XM

GG-B100XM

MSRP $440

See the full GG-B100XM

Spinnaker Dumas Automatic

MSRP $239

See the full Dumas Automatic

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At a glance

15 of 29 specs differ

Diameter

GG-B100XM51.3mm

Dumas Automatic44mm

Power Reserve

GG-B100XM—

Dumas Automatic—

Water Resistance

GG-B100XM200m

Dumas Automatic300m

MSRP

GG-B100XM$440

Dumas Automatic$239

Full specifications

Case

8 specs

Crystal & Dial

3 specs

Crystal

Mineral

Sapphire

AR Coating

—

Dial Color

Black

Blue

Movement

3 specs

Caliber

—

Seiko NH35

Type

Quartz

Automatic

Power Reserve

—

Pricing

1 specs

MSRP

$440

$239

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Casio GG-B100XMvsSpinnaker Dumas Automatic

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