Side by side

Casio GM-2100vsLum-Tec B71

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
B71
Lum-TecB71
MSRP $506
See the full B71
Buy from Casio ↗
Buy used on eBay ↗
Buy from Lum-Tec ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
GM-210044.4mm
B7144mm
Power Reserve
GM-2100—
B71—
Water Resistance
GM-2100200m
B71200m
MSRP
GM-2100$220
B71$506

Full specifications

Case

6 specs
Diameter
44.4mm
44mm
Thickness
11.8mm
—
Lug-to-Lug
49.3mm
51.5mm
Lug Width
—
22mm
Material
Resin / Stainless steel
316L Stainless Steel (DLC coated)
Finish
—
—

Crystal & Dial

3 specs
Crystal
Mineral
Domed Sapphire
AR Coating
No
—
Dial Color
Black
B71

Movement

2 specs
Caliber
—
Ronda 515
Power Reserve
—
0h

Pricing

1 specs
MSRP
$220
$506
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