Side by side

Casio GM-2100vsLum-Tec B64 Chronograph

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

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GM-2100
CasioGM-2100
MSRP $220
See the full GM-2100
B64 Chronograph
Lum-TecB64 Chronograph
MSRP $545
See the full B64 Chronograph
Buy from Casio ↗
Buy used on eBay ↗
Buy from Lum-Tec ↗
Buy used on eBay ↗

At a glance

15 of 29 specs differ
Diameter
GM-210044.4mm
B64 Chronograph44mm
Power Reserve
GM-2100—
B64 Chronograph—
Water Resistance
GM-2100200m
B64 Chronograph100m
MSRP
GM-2100$220
B64 Chronograph$545

Full specifications

Case

8 specs
Category
Sport
Chronograph
Diameter
44.4mm
44mm
Thickness
11.8mm
—
Lug-to-Lug
49.3mm
51.5mm
Lug Width
—
22mm
Material
Resin / Stainless steel
Titanium (DLC coated)
Finish
—
—
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Mineral
Domed Sapphire
AR Coating
No
—
Dial Color
Black
Standard

Movement

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

Pricing

1 specs
MSRP
$220
$545
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