Side by side

Casio GBM-2100AvsProTek Watches Model PT4101SF USMC Carbon Dive

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
Model PT4101SF USMC Carbon Dive
ProTek WatchesModel PT4101SF USMC Carbon Dive
MSRP $575
See the full Model PT4101SF USMC Carbon Dive
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At a glance

14 of 29 specs differ
Diameter
GBM-2100A44.4mm
Model PT4101SF USMC Carbon Dive45mm
Power Reserve
GBM-2100A—
Model PT4101SF USMC Carbon Dive—
Water Resistance
GBM-2100A200m
Model PT4101SF USMC Carbon Dive300m
MSRP
GBM-2100A$280
Model PT4101SF USMC Carbon Dive$575

Full specifications

Case

8 specs
Category
Sport
—
Diameter
44.4mm
45mm
Thickness
11.9mm
0mm
Lug-to-Lug
49.3mm
0mm
Lug Width
—
22mm
Material
Bio-based Resin / Stainless steel
Carbon
Finish
—
—
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
AR Coating
No
—
Dial Color
Silver
—

Movement

2 specs
Caliber
—
Miyota 2035
Power Reserve
—
0h

Pricing

1 specs
MSRP
$280
$575
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