Casio GMC-2500vsEdox Delfin 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.

GMC-2500

Delfin Chronograph
Diameter
43.8mm
43mm
Thickness
12.9mm
12.9mm
Water Resistance
200m
200m
MSRP
$280
lowest
$935
Movement
5757
Caliber 101 (Ronda 5021.D)
Case
3 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely describe the Casio GMC-2500 as comfortable and not oversized despite its 43.8mm case, with one saying it feels perfect and that G-Shock wearers will find it familiar; owners of both the metal and resin versions report a great wearing experience. Reviewers call it an exceptional running watch, praising the high-contrast yellow dial, built-in light for night runs, and the date-wheel stopwatch as a real advantage over a small chronograph subdial. The main caveats are the bracelet, which reviewers say is loose with wide link gaps and a clasp offering only three micro-adjust points, and a magnetically held hand design that one owner-sourced account says can let the minute hand wobble and briefly sit wrong after impacts, a flaw Casio itself acknowledges. Overall, owners and reviewers rate the Casio GMC-2500 well, mainly for its running usability and comfortable wear.
Owners widely report surprising fit and finish for the price, with one owner noting accuracy within ±3 seconds per day. A reviewer flags scant lume that fades quickly, and another owner found a sibling model too large. The Edox Delfin Chronograph is 43mm and uses a Ronda 5021.D quartz movement. On balance, owners and reviewers find the Edox Delfin Chronograph offers strong value, with its fit and finish at the price being the most frequently praised aspects.
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