Casio EFB-730DvsKnot Watches CC-39ABK
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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

CC-39ABK
Diameter
40mm
39mm
Lug-to-Lug
47mm
n/a
Thickness
11mm
9mm
lowest
Water Resistance
100m
highest
30m
MSRP
$165
lowest
$188
Movement
Quartz
Seiko YM91
Case
7 specsCrystal & Dial
2 specsMovement
2 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.
Knot Watches Knot Timepiece CC-39ABK owners praise its Bauhaus-style design and attractive price point, with one owner calling it an awesome chronograph for $35 USD and another noting Seiko-like finishing. The blue dial is described as captivating, and the watch is appreciated for its Japanese origin and exclusivity. Owners find it very light with a soft, ready-to-wear leather strap, and value the ability to customize the face and strap. One owner reported disappointment with the strap and engraving quality, while another noted the lugs are a little thick, possibly due to the interchangeable strap system. Overall, owners rate the Knot Watches Knot Timepiece CC-39ABK highly for its aesthetic appeal and value.
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