Casio EFB-730DvsZelos GT
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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.

EFB-730D

GT
Diameter
40mm
42mm
Lug-to-Lug
47mm
n/a
Thickness
11mm
10.8mm
lowest
Water Resistance
100m
100m
MSRP
$165
lowest
$529
Movement
Quartz
Miyota 9133
Case
6 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 EFB-730D for its 40mm size, which is considered perfect for smaller to medium wrists and versatile for strap changes with its 20mm lug width. The subtle sunburst blue dial is noted as classy and better in person than in photos, and the overall finish is considered quite good for the price. Some owners find the constantly running central seconds hand impractical, while others appreciate its straightforward Casio quartz reliability and value around $150. One owner reported the second hand sticking on the minute hand, and another found the 47mm lug-to-lug measurement wore larger than expected. Overall, owners rate the Casio EFB-730D highly for its comfortable wearability and attractive design at the price point.
Owners widely praise the Zelos GT for its value and materials that exceed expectations, with particular appreciation for the power reserve meter and the superb 3-point micro-adjust bracelet. However, some owners find certain designs too aggressive or oversized, and one owner noted the dark green dial mostly appears black. The bracelet is described as extremely long, requiring significant link removal even for a 7.1-inch wrist. Overall, owners rate the Zelos GT highly for its value and bracelet adjustability at its price point.
The dial's subtle light play and the inclusion of a Miyota 9133 movement with a power reserve indicator are noted strengths. Reviewers did not reach a consensus on any weaknesses.
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