Addiesdive Chronograph AD2520vsCasio EFB-730D
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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.

Chronograph AD2520

EFB-730D
Diameter
40mm
40mm
Lug-to-Lug
48mm
47mm
lowest
Thickness
13mm
11mm
lowest
Water Resistance
100m
100m
MSRP
$80
lowest
$165
Movement
Seiko VK64
Quartz
Case
4 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Addiesdive 40mm VK64 Chronograph Watch AD2520's surprising quality and finishing for its price point, noting a well-built bracelet that rivals Seiko's 5 series and bright, durable BGW9 lume that lasts through the night. Reviewers flag the Seiko VK64 movement's 24-hour subdial as a functional detractor, serving only as a day/night indicator rather than tracking elapsed time. One owner notes the watch's 100m water resistance and 40mm case size contribute to its wearability. Overall, owners rate the Addiesdive 40mm VK64 Chronograph Watch AD2520 highly for its exceptional finishing and lume at the price, despite functional criticisms of the VK64 movement's subdial.
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.
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