Side by side

Casio GBM-2100AvsBoldr Marine

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

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GBM-2100A
CasioGBM-2100A
MSRP $280
See the full GBM-2100A
Marine
BoldrMarine
MSRP $439
See the full Marine
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At a glance

15 of 29 specs differ
Diameter
GBM-2100A44.4mm
Marine40mm
Power Reserve
GBM-2100A—
Marine—
Water Resistance
GBM-2100A200m
Marine200m
MSRP
GBM-2100A$280
Marine$439

Full specifications

Case

7 specs
Category
Sport
Tool
Diameter
44.4mm
40mm
Thickness
11.9mm
12.3mm
Lug-to-Lug
49.3mm
46mm
Lug Width
—
20mm
Material
Bio-based Resin / Stainless steel
Stainless Steel
Finish
—
—

Crystal & Dial

4 specs
Crystal
Mineral
Sapphire
AR Coating
No
Yes
Dial Color
Silver
Defender Elewana
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
—
Seiko NH35
Type
Quartz
Automatic
Power Reserve
—
0h

Pricing

1 specs
MSRP
$280
$439
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