Side by side

Grand Seiko SBGA384vsSpinnaker Dumas GMT

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

SBGA384
Grand SeikoSBGA384
MSRP $29,500
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

13 of 29 specs differ
Diameter
SBGA38440mm
Dumas GMT44mm
Power Reserve
SBGA38472h
Dumas GMT40h
Water Resistance
SBGA384100m
Dumas GMT300m
MSRP
SBGA384$29,500
Dumas GMT$399

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
40mm
44mm
Thickness
12.5mm
15mm
Lug-to-Lug
46.2mm
48mm
Lug Width
19mm
22mm
Material
Gold
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Blue

Movement

3 specs
Caliber
9R15
Seiko NH34A
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$29,500
$399

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