Side by side

Bremont ionBirdvsGrand Seiko STGF387

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

ionBird
BremontionBird
MSRP $5,800
STGF387
Grand SeikoSTGF387
MSRP $4,200

At a glance

12 of 29 specs differ
Diameter
ionBird43mm
STGF38726mm
Power Reserve
ionBird40h
STGF38740h
Water Resistance
ionBird—
STGF387100m
MSRP
ionBird$5,800
STGF387$4,200

Full specifications

Case

7 specs
Category
Pilot
Dress
Diameter
43mm
26mm
Thickness
—
8.1mm
Lug-to-Lug
—
32.9mm
Lug Width
—
13mm
Material
Titanium
Stainless Steel
Water Resistance
—
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Regular length (15cm - 19cm wrist size)
Black

Movement

2 specs
Caliber
—
4J51
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$5,800
$4,200

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