Casio GMB2100GD-5AvsMovado Series 800 Chronograph
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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

Series 800 Chronograph
Diameter
44.4mm
42mm
Thickness
12.8mm
n/a
Water Resistance
200m
200m
MSRP
$600
lowest
$1,495
Movement
5691
Quartz
Case
2 specsCrystal & Dial
1 specsMovement
2 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 Movado Series 800 Chronograph as a solid daily driver with zero maintenance headaches and flawless chronograph functions, noting its 200m water resistance eliminates "precious watch" anxiety. Its 42mm size is considered versatile for office or weekend wear, suitable for most wrist sizes. Reviewers and owners alike highlight its sportier, tool-watch aesthetic with a dive watch feel, featuring a sunray dial and applied markers. Some owners find the case construction nice and the watch well-made, with one owner's friend's long-owned example still looking and performing well despite constant wear. However, one reviewer noted the omission of some lumed indices and a non-color-matched date wheel as odd misses. Another owner mentions that the chronograph hands require manual adjustment to their zero positions after a battery change or error, with each button press advancing the active hand one increment.
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