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.

MDV-106 Duro

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 specsCrystal & Dial
2 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
The Casio MDV-106 Duro's quartz movement demonstrates excellent accuracy. Its stainless steel case features surprisingly good finishing for its price point.
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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