Side by side

Casio GM-B2100SDvsSeiko Essentials Chronograph

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

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GM-B2100SD
CasioGM-B2100SD
MSRP $600
See the full GM-B2100SD
Essentials Chronograph
SeikoEssentials Chronograph
MSRP $265
See the full Essentials Chronograph
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Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

At a glance

14 of 29 specs differ
Diameter
GM-B2100SD44.4mm
Essentials Chronograph41.5mm
Power Reserve
GM-B2100SD—
Essentials Chronograph—
Water Resistance
GM-B2100SD200m
Essentials Chronograph100m
MSRP
GM-B2100SD$600
Essentials Chronograph$265

Full specifications

Case

8 specs
Category
Sport
Chronograph
Diameter
44.4mm
41.5mm
Thickness
12.8mm
12.1mm
Lug-to-Lug
49.8mm
46.5mm
Lug Width
—
22mm
Material
Stainless Steel
—
Finish
—
—
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Mineral
Hardlex
AR Coating
No
—
Dial Color
Black
—

Movement

2 specs
Caliber
—
8T63
Power Reserve
—
0h

Pricing

1 specs
MSRP
$600
$265
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