Side by side

Casio GMD-B300vsBoldr Polaris

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

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GMD-B300
CasioGMD-B300
MSRP $135
See the full GMD-B300
Polaris
BoldrPolaris
MSRP $399
See the full Polaris
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At a glance

14 of 29 specs differ
Diameter
GMD-B30043.8mm
Polaris38mm
Power Reserve
GMD-B300—
Polaris—
Water Resistance
GMD-B300200m
Polaris200m
MSRP
GMD-B300$135
Polaris$399

Full specifications

Case

6 specs
Category
Sport
Tool
Diameter
43.8mm
38mm
Lug-to-Lug
46.4mm
44mm
Lug Width
—
20mm
Material
Resin / Bio-based resin
Titanium
Finish
—
—

Crystal & Dial

4 specs
Crystal
Mineral
Sapphire
AR Coating
No
Yes
Dial Color
Black
Blackout
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
—
Seiko NH38
Type
Quartz
Automatic
Power Reserve
—
0h

Pricing

1 specs
MSRP
$135
$399
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