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Castor Watches IORANA RAPA NUIvsGrand Seiko SBGH281

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

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IORANA RAPA NUI
Castor WatchesIORANA RAPA NUI
SBGH281
Grand SeikoSBGH281
MSRP $6,300
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Buy from Grand Seiko ↗
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At a glance

13 of 29 specs differ
Diameter
IORANA RAPA NUI36mm
SBGH28140mm
Power Reserve
IORANA RAPA NUI—
SBGH28155h
Water Resistance
IORANA RAPA NUI50m
SBGH281100m
MSRP
IORANA RAPA NUI—
SBGH281$6,300

Full specifications

Case

6 specs
Category
—
Dress
Diameter
36mm
40mm
Thickness
9mm
13.3mm
Lug-to-Lug
—
46.2mm
Lug Width
20mm
19mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
AR Coating
Inner
Yes
Dial Color
Nogal
Black

Movement

3 specs
Caliber
Miyota 2035
9S85
Type
Quartz
Automatic
Power Reserve
—
55h

Pricing

1 specs
MSRP
—
$6,300
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