Side by side

Spinnaker Bradner GMTvsGrand Seiko STGF387

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

Bradner GMT
SpinnakerBradner GMT
MSRP $299
STGF387
Grand SeikoSTGF387
MSRP $4,200

At a glance

12 of 29 specs differ
Diameter
Bradner GMT42mm
STGF38726mm
Power Reserve
Bradner GMT40h
STGF38740h
Water Resistance
Bradner GMT180m
STGF387100m
MSRP
Bradner GMT$299
STGF387$4,200

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
42mm
26mm
Thickness
15mm
8.1mm
Lug-to-Lug
50mm
32.9mm
Lug Width
22mm
13mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
180m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Brown
Black

Movement

2 specs
Caliber
Seiko NH34A
4J51
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$299
$4,200

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