Casio GMA-S2100vsCasio EF-129D
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

GMA-S2100

EF-129D
Diameter
42.9mm
44.8mm
Lug-to-Lug
46.2mm
n/a
Thickness
11.2mm
10.4mm
lowest
Water Resistance
200m
highest
100m
MSRP
$110
lowest
$115
Movement
Quartz
5125
Case
8 specsCategory
Sport
n/a
Diameter
42.9mm
44.8mm
Thickness
11.2mm
10.4mm
Lug-to-Lug
46.2mm
n/a
Lug Width
n/a
n/a
Material
Carbon / Resin
Stainless Steel
Finish
n/a
n/a
Water Resistance
200m
100m
Crystal & Dial
1 specsAR Coating
No
n/a
Movement
2 specsCaliber
n/a
5125
Power Reserve
n/a
0h
Pricing
1 specsMSRP
$110
$115
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