Side by side

Castor Watches KOI DARKvsCitizen AW1788

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

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KOI DARK
Castor WatchesKOI DARK
AW1788
CitizenAW1788
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At a glance

11 of 29 specs differ
Diameter
KOI DARK38mm
AW178840mm
Power Reserve
KOI DARK—
AW178840h
Water Resistance
KOI DARK50m
AW1788—
MSRP
KOI DARK—
AW1788—

Full specifications

Case

7 specs
Category
—
Casual
Diameter
38mm
40mm
Thickness
7mm
12mm
Lug-to-Lug
—
46mm
Lug Width
18mm
21mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
—

Crystal & Dial

1 specs
Dial Color
Copper
White

Movement

3 specs
Caliber
Miyota 2035
J810
Type
Quartz
Solar
Power Reserve
—
40h
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