Side by side

Casio GBM-2100AvsGeckota GT Racing Chronograph

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

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Casio GBM-2100A

The premium stainless steel bezel and Bluetooth connectivity are highlighted strengths. The increased mass from the metal bezel is noted as a potential drawback for some wearers. Reviewers differ on its value proposition compared to other G-Shock models.

Geckota GT Racing Chronograph

The Geckota GT Racing strap is praised for its quality leather, crisp stitching, and beautiful patina, offering excellent value at less than half the price of similar vintage straps. Some owners find the 125/80mm length longer than ideal, and the keeper potentially smaller. On balance, owners rate the Geckota GT Racing strap highly for its quality and value, despite minor concerns about its length and keeper size.

At a glance

13 of 29 specs differ
Diameter
GBM-2100A44.4mm
GT Racing Chronograph40mm
Power Reserve
GBM-2100A
GT Racing Chronograph
Water Resistance
GBM-2100A200m
GT Racing Chronograph50m
MSRP
GBM-2100A$280
GT Racing Chronograph$399

Full specifications

Case

7 specs
Category
Sport
Chronograph
Diameter
44.4mm
40mm
Thickness
11.9mm
12.7mm
Lug-to-Lug
49.3mm
Material
Bio-based Resin / Stainless steel
316L Stainless Steel
Finish
Water Resistance
200m
50m

Crystal & Dial

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

Movement

2 specs
Caliber
Power Reserve
0h

Pricing

1 specs
MSRP
$280
$399
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