Casio EFB-730DvsSeiko Chronograph SSB479

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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.

Casio EFB-730D at true scale

EFB-730D

Seiko Chronograph SSB479 at true scale

Chronograph SSB479

Diameter

40mm

38.7mm

Lug-to-Lug

47mm

45.1mm

lowest

Thickness

11mm

lowest

12.6mm

Water Resistance

100m

highest

50m

MSRP

$165

lowest

$450

Movement

Quartz

Seiko 8T63

Case

7 specs
Diameter
40mm
38.7mm
Thickness
11mm
12.6mm
Lug-to-Lug
47mm
45.1mm
Lug Width
n/a
20mm
Finish
n/a
n/a
Water Resistance
100m
50m
Caseback
n/a
Screw case back

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
Crystal Shape
n/a
Box
AR Coating
No
n/a
Dial Color
Black
n/a

Movement

2 specs
Caliber
n/a
Seiko 8T63
Power Reserve
n/a
0h

Pricing

1 specs
MSRP
$165
$450
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Casio EFB-730D

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.

Seiko Chronograph SSB479

Owners widely praise the Seiko Chronograph SSB479 for its appealing retro aesthetic, excellent dial design, and desirable proportions, with many highlighting its "Goldilocks-sized" 38.7mm case as a favorite feature. Reviewers and owners alike appreciate its high-end look and vintage charm at an accessible price point, with one owner noting the mecha-quartz movement is satisfactory given the cost. Some owners find the watch beautiful and a "strap monster," with attention to detail justifying its price, though one considered it steep compared to a Tissot quartz chronograph. On balance, owners and reviewers rate the Seiko Chronograph SSB479 highly for its vintage style and well-proportioned case.

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