Side by side

Casio GBM-2100AvsCitizen Nighthawk

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

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.

Citizen Nighthawk

Owners widely praise the Citizen Nighthawk's captivating and legible dial, often noting its intricate details and surprisingly clear readability despite a busy appearance. The solar-powered Eco-Drive quartz movement is consistently lauded for its accuracy and silent operation, with precise second-hand alignment. Reviewers and owners also highlight the watch's robust build, comfortable wearability due to its 42mm case and short lug-to-lug, and excellent lume. However, multiple sources flag the mineral crystal's susceptibility to scratches, with some owners planning upgrades to sapphire. The bracelet quality receives mixed feedback, with some finding it well-made and substantial, while others criticize its feel or construction. One owner notes play in the hour hand setting mechanism. On balance, owners and reviewers rate the Citizen Nighthawk highly for its striking dial and accurate Eco-Drive movement at a great value.

At a glance

13 of 29 specs differ
Diameter
GBM-2100A44.4mm
Nighthawk43mm
Power Reserve
GBM-2100A
Nighthawk
Water Resistance
GBM-2100A200m
Nighthawk200m
MSRP
GBM-2100A$280
Nighthawk$431

Full specifications

Case

7 specs
Category
Sport
Pilot
Diameter
44.4mm
43mm
Thickness
11.9mm
0mm
Lug-to-Lug
49.3mm
0mm
Lug Width
23.5mm
Material
Bio-based Resin / Stainless steel
Stainless Steel
Finish

Crystal & Dial

2 specs
AR Coating
No
Dial Color
Silver
Grey

Movement

3 specs
Caliber
B620
Type
Quartz
Solar
Power Reserve
0h

Pricing

1 specs
MSRP
$280
$431
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