Side by side

Casio GBM-2100AvsOblvlo HM GT

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
HM GT
OblvloHM GT
MSRP $209
See the full HM GT
Buy from Casio ↗
Buy used on eBay ↗
Buy from Oblvlo ↗
Buy used on eBay ↗

At a glance

16 of 29 specs differ
Diameter
GBM-2100A44.4mm
HM GT44mm
Power Reserve
GBM-2100A—
HM GT42h
Water Resistance
GBM-2100A200m
HM GT50m
MSRP
GBM-2100A$280
HM GT$209

Full specifications

Case

7 specs
Diameter
44.4mm
44mm
Thickness
11.9mm
12mm
Lug-to-Lug
49.3mm
0mm
Lug Width
—
22mm
Material
Bio-based Resin / Stainless steel
Stainless Steel
Finish
—
—
Water Resistance
200m
50m

Crystal & Dial

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

Movement

5 specs
Caliber
—
Miyota 8217
Type
Quartz
Automatic
Power Reserve
—
42h
Jewels
0
21
Complications
None
Day, Date

Pricing

1 specs
MSRP
$280
$209
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