Casio EFB-730DvsHemel HFC Mechanical Chronograph

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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

Hemel HFC Mechanical Chronograph at true scale

HFC Mechanical Chronograph

Diameter

40mm

40mm

Lug-to-Lug

47mm

47mm

Thickness

11mm

lowest

13.4mm

Water Resistance

100m

100m

MSRP

$165

lowest

$550

Movement

Quartz

Seagull ST19 (family)

Case

4 specs
Thickness
11mm
13.4mm
Lug Width
n/a
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
n/a
n/a

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
No
n/a
Dial Color
Black
Airfoil (1970s British Pilot)

Movement

3 specs
Caliber
n/a
Seagull ST19 (family)
Type
Quartz
Manual
Power Reserve
n/a
0h

Pricing

1 specs
MSRP
$165
$550
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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.

Hemel HFC Mechanical Chronograph

The Hemel HFC Mechanical Chronograph is praised for its 40mm case size, curved sapphire crystal, and lumed ceramic bezel with 12-hour markers. Owners and reviewers highlight its 100m water resistance and the horological significance of its Seagull ST19 manual-winding movement, particularly at its price point, with some appreciating the exhibition caseback. One owner expressed concern regarding the ST19 movement's reliability. Overall, owners and reviewers rate the Hemel HFC Mechanical Chronograph highly for its vintage pilot's watch aesthetic combined with modern utility and value.