Casio GBA-400vsCasio GD-120CM

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Casio GBA-400

Ref. GBA-400-3BJF·MSRP $200

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Casio GD-120CM

Ref. GD-120CM·MSRP $155

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Buy from Casio Used on eBay

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

GBA-400

GD-120CM

Diameter

Across the case, crown excluded.

51.9mm

51.2mm

Lug-to-Lug

The number that decides fit.

55mm

Thickness

How it sits under a cuff.

18.3mm

17.4mm

lowest

Water Resistance

Rated in meters.

200m

MSRP

Sticker price, new.

$200

$155

lowest

Movement

What drives the hands.

Module 5413

Quartz

Spec

GBA-400

GD-120CM

Case

5 specs

Diameter

51.9mm

51.2mm

Thickness

18.3mm

17.4mm

Lug Width

n/a

Finish

n/a

Caseback

Solid

n/a

Crystal & Dial

4 specs

Crystal Shape

Flat

n/a

AR Coating

n/a

Dial Color

Green

Brown

Indices

Applied

n/a

Movement

2 specs

Caliber

Module 5413

n/a

Power Reserve

n/a

Pricing

1 specs

MSRP

$200

$155

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Reviews

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

Casio GBA-400

Owners report the Casio GBA-400 is a rugged, 200m water-resistant Bluetooth watch that allows remote music control from a smartphone. The watch has demonstrated remarkable durability, with one owner noting it looked brand new after five years of use and various tortures. However, connectivity issues are noted, with one owner unable to connect to an iPhone and another reporting the app does not work with Android 12, while Bluetooth connectivity can be inconsistent and music controls may not work with all phones. Some owners also flag the crown as fragile, with one reporting it broke and required repair. Overall, owners rate the Casio GBA-400 highly for its durability and ruggedness, despite noted Bluetooth connectivity and crown fragility concerns.

Reddit·6

WatchUSeek

Casio GD-120CM

Owners praise the Casio GD-120CM for its utility as a computational tool for field observations, eliminating the need for extra equipment. One owner is happy with the Casio GD-120CM and feels it completes their collection. Overall, owners rate the Casio GD-120CM highly for its practical functionality.

Reddit·2