Casio GMA-P2100vsCasio LCW-M170TD
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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.

GMA-P2100

LCW-M170TD
Diameter
40.2mm
39.5mm
Lug-to-Lug
46mm
lowest
46.4mm
Thickness
11.2mm
9.2mm
lowest
Water Resistance
200m
highest
50m
MSRP
$110
lowest
$229
Movement
Quartz
Solar
Case
7 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 GMA-P2100 for its compact size, with one user noting it fits their wrist when other G-Shocks do not. The watch is described as having a smart look and keeping time with near perfection. One owner finds the GMA-P2100 a suitable size despite considering larger models, and another humorously suggests "P" in the model name might stand for "Pico" due to its small stature. On balance, owners rate the Casio GMA-P2100 highly for its wearability and reliable timekeeping.
The watch is praised for its 200m water resistance and slimmer, sleeker design compared to traditional G-Shocks. Reviewers noted the integrated calculator function. No shared weaknesses were identified.
Owners praise the Casio LCW-M170TD for its solar-powered, radio-controlled movement, titanium case, and sapphire crystal, noting perfect second hand alignment and an elegant, dressy appearance compared to other models. Some find the lume weak and the 6 o'clock marker out of place, while others criticize the LCD background and the four-screw case back. On balance, owners rate the Casio LCW-M170TD highly for its advanced features and refined titanium construction at its price point.
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