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Aigi Watches POLAR DAY 40MMvsGrand Seiko SBGX355

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

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POLAR DAY 40MM
Aigi WatchesPOLAR DAY 40MM
MSRP $179
SBGX355
Grand SeikoSBGX355
MSRP $4,100
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Buy used on eBay ↗
Buy from Grand Seiko ↗
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At a glance

11 of 29 specs differ
Diameter
POLAR DAY 40MM40mm
SBGX35537mm
Power Reserve
POLAR DAY 40MM40h
SBGX35540h
Water Resistance
POLAR DAY 40MM50m
SBGX355100m
MSRP
POLAR DAY 40MM$179
SBGX355$4,100

Full specifications

Case

7 specs
Category
—
Dress
Diameter
40mm
37mm
Thickness
6.6mm
10.6mm
Lug-to-Lug
46mm
44.6mm
Lug Width
20mm
19mm
Material
Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
—
Black

Movement

1 specs
Caliber
Miyota
9F62

Pricing

1 specs
MSRP
$179
$4,100
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