Hemel HD24 AutomaticvsSeiko Prospex Sea

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HD24 Automatic
HemelHD24 Automatic

MSRP $300

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Prospex Sea
SeikoProspex Sea

MSRP $625

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Buy from Seiko Used on eBay

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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

Seiko Prospex Sea at true scale

Prospex Sea

Diameter

40mm

43.8mm

Lug-to-Lug

48mm

lowest

48.7mm

Thickness

13mm

12.8mm

lowest

Water Resistance

200m

200m

Power Reserve

n/a

41h

MSRP

$300

lowest

$625

Movement

Seiko NH38

Seiko 4R35

Case

5 specs
Diameter
40mm
43.8mm
Thickness
13mm
12.8mm
Lug-to-Lug
48mm
48.7mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Gallant USAF Edition
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH38
Seiko 4R35
Power Reserve
0h
41h
Jewels
0
23

Pricing

1 specs
MSRP
$300
$625
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