Side by side

Casio GMA-P2100vsTimefactors Speedbird GMT

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

At a glance

14 of 29 specs differ
Diameter
GMA-P210040.2mm
Speedbird GMT36mm
Power Reserve
GMA-P2100
Speedbird GMT
Water Resistance
GMA-P2100200m
Speedbird GMT100m
MSRP
GMA-P2100$110
Speedbird GMT$315

Full specifications

Case

8 specs
Category
Sport
Diameter
40.2mm
36mm
Thickness
11.2mm
11.6mm
Lug-to-Lug
46mm
42.5mm
Lug Width
18mm
Material
Resin / Bio-based resin
Stainless Steel
Finish
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal
Mineral
Sapphire
AR Coating
No
Dial Color
White
Black
Lume
None
Super Luminova X1 C3

Movement

1 specs
Caliber
Ronda 515

Pricing

1 specs
MSRP
$110
$315
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