Casio GMB2100GD-5AvsLongines HydroConquest PVD
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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.
GMB2100GD-5A
HydroConquest PVD
Diameter
44.4mm
42mm
Thickness
12.8mm
n/a
Water Resistance
200m
300m
highest
MSRP
$600
lowest
$1,800
Movement
5691
Quartz
Case
5 specsCrystal & Dial
5 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners note the Casio GM-S2110BP-5A's strap gets dirty easily but cleans well, and the watch itself resists scratches during frequent wear. Some owners lament the lack of a positive display and find the lume could be brighter. A metal conversion kit is available, transforming the watch into a daily wearer. Overall, owners appreciate the Casio GM-S2110BP-5A for its scratch resistance and the potential for customization via modding kits.
Owners widely praise the Longines HydroConquest PVD for its beautiful appearance, solid build, and unique design that stands out from other divers, with many finding it a desirable alternative to higher-end dive watches at a lower price point. Some owners report excellent accuracy, with one noting it loses only about 2 seconds a day, while others find the lume faint and the bracelet clasp could offer more micro-adjustments. One owner questions the durability of the PVD coating. On balance, owners rate the Longines HydroConquest PVD highly for its satisfying luxury diver feel and beautiful design at the price.
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