Side by side
Aigi Watches POLAR NIGHTvsCasio B640
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
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At a glance
12 of 29 specs differDiameter
POLAR NIGHT24mm
B64035mm
Power Reserve
POLAR NIGHT—
B640—
Water Resistance
POLAR NIGHT50m
B64050m
MSRP
POLAR NIGHT$180
B640$80
Full specifications
Case
7 specsCategory
—
Sport
Diameter
24mm
35mm
Thickness
6.6mm
9.4mm
Lug-to-Lug
0mm
38.9mm
Lug Width
20mm
—
Material
Stainless Steel
Resin
Finish
—
—
Crystal & Dial
2 specsCrystal
Sapphire
Acrylic
AR Coating
—
No
Movement
2 specsCaliber
Miyota 5Y20
—
Power Reserve
0h
—
Pricing
1 specsMSRP
$180
$80
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