Side by side
Hemel HD24 AutomaticvsSeiko Prospex Sea Save the Ocean Special Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
HD24 Automatic40mm
Prospex Sea Save the Ocean Special Edition42.4mm
Power Reserve
HD24 Automatic40h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
HD24 Automatic200m
Prospex Sea Save the Ocean Special Edition200m
MSRP
HD24 Automatic$300
Prospex Sea Save the Ocean Special Edition$550
Full specifications
Case
4 specsDiameter
40mm
42.4mm
Thickness
13mm
13.4mm
Lug-to-Lug
48mm
49.4mm
Material
316L Stainless Steel
Stainless Steel
Crystal & Dial
3 specsCrystal
Domed Sapphire
Hardlex
Dial Color
Gallant USAF Edition
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH38A
4R36
Power Reserve
40h
41h
Jewels
25
24
Pricing
1 specsMSRP
$300
$550
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