Hemel HD24 AutomaticvsBoldr Odyssey Freediver

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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.

Hemel HD24 Automatic at true scale

HD24 Automatic

Boldr Odyssey Freediver at true scale

Odyssey Freediver

Diameter

40mm

40mm

Lug-to-Lug

48mm

48mm

Thickness

13mm

lowest

14.2mm

Water Resistance

200m

300m

highest

MSRP

$300

lowest

$649

Movement

Seiko NH38

Automatic

Case

3 specs
Thickness
13mm
14.2mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
n/a
Yes
Dial Color
Gallant USAF Edition
202
Lume
None
Super-LumiNova

Movement

1 specs
Caliber
Seiko NH38
n/a

Pricing

1 specs
MSRP
$300
$649
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