Casio MDV-106 DurovsCasio GMB2100GD-5A

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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.

Casio MDV-106 Duro at true scale

MDV-106 Duro

Casio GMB2100GD-5A at true scale

GMB2100GD-5A

Diameter

44.2mm

44.4mm

Lug-to-Lug

48.5mm

n/a

Thickness

12.1mm

lowest

12.8mm

Water Resistance

200m

200m

MSRP

$85

lowest

$600

Movement

Quartz

5691

Case

5 specs
Diameter
44.2mm
44.4mm
Thickness
12.1mm
12.8mm
Lug-to-Lug
48.5mm
n/a
Lug Width
n/a
n/a
Finish
n/a
n/a

Crystal & Dial

2 specs
AR Coating
No
n/a
Dial Color
Black
n/a

Movement

3 specs
Caliber
n/a
5691
Type
Quartz
Solar
Power Reserve
n/a
0h

Pricing

1 specs
MSRP
$85
$600
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Reviews

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

Casio MDV-106 Duro

Owners widely praise the Casio MDV-106 Duro for its quality-to-price ratio and elegant design, often highlighting the Marlin logo and finishing. Many consider it a stunning first watch or a strong alternative to more expensive dive watches, with some noting its elegant diameter and build quality. One owner mentions the 44.2mm case size is preferred over a smaller sibling model. The Casio MDV-106 Duro is available for around $59-$70, and owners frequently suggest aftermarket strap or bracelet upgrades. Some owners flag the large size and weak lume as negatives. Overall, owners rate the Casio MDV-106 Duro highly for its design elegance and exceptional value.

From video reviewers

The Casio MDV-106 Duro's quartz movement demonstrates excellent accuracy. Its stainless steel case features surprisingly good finishing for its price point.

Casio GMB2100GD-5A

Owners and reviewers consistently praise the Casio GMB2100GD-5A's rose-gold finish and build quality: Fratello calls the three-step brushed and polished finishing upscale and the steel bracelet comfortable, and one owner describes the color as stunning. Reviewers also single out the 200m water resistance and the solid, smooth folding-clasp bracelet, and Fratello judges the €599 / US$600 price tremendous value for the metal construction. Caveats are limited: one reviewer notes the chunky, bling-heavy shape demands a taste for shine, and the price may be a spell breaker for some buyers. One owner reports the solar charge indicator stayed at 2 of 5 bars after several hours in direct sunlight, a single unexplained report. Overall, owners and reviewers rate the Casio GMB2100GD-5A highly, mainly for its finishing, bracelet comfort, and value at the price.

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