Side by side
Hemel HD24 AutomaticvsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
HD24 Automatic40mm
Prospex Sea34mm
Power Reserve
HD24 Automatic40h
Prospex Sea40h
Water Resistance
HD24 Automatic200m
Prospex Sea200m
MSRP
HD24 Automatic$300
Prospex Sea$795
Full specifications
Case
5 specsDiameter
40mm
34mm
Thickness
13mm
8.7mm
Lug-to-Lug
48mm
40.8mm
Lug Width
20mm
16mm
Material
316L Stainless Steel
Stainless Steel
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Gallant USAF Edition
Black
Lume
None
LumiBrite on hands and index(es)
Movement
2 specsCaliber
Seiko NH38A
6N01
Type
Automatic
Quartz
Pricing
1 specsMSRP
$300
$795
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