Casio EFB-730DvsKnot Watches CC-39ASV
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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-39ASV
Diameter
40mm
39mm
Lug-to-Lug
47mm
n/a
Thickness
11mm
9mm
lowest
Water Resistance
100m
highest
30m
MSRP
$165
lowest
$181
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.
Owners praise the Knot Watches CC-39ASV for its solid build quality, clean aesthetic, and the small seconds hand accurately hitting its markers. The watch is considered to offer superior quality compared to other brands at a similar price point. However, one owner reported poor timekeeping and a lack of customer service response. Another owner found the included strap too narrow and disliked that the "sample battery" requires sending the watch back for replacement. The mesh strap is comfortable and the watch's low weight makes it easy to wear, though the strap width is slightly undersized for standard 18mm straps. Overall, owners rate the Knot Watches CC-39ASV positively for its build quality and aesthetic, despite some concerns regarding timekeeping and strap fit.
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