Side by side
Seiko Prospex SeavsHelgray Poseidon Diver (Automatic)
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
Prospex Sea42mm
Poseidon Diver (Automatic)40mm
Power Reserve
Prospex Sea72h
Poseidon Diver (Automatic)40h
Water Resistance
Prospex Sea300m
Poseidon Diver (Automatic)300m
MSRP
Prospex Sea—
Poseidon Diver (Automatic)$249
Full specifications
Case
3 specsDiameter
42mm
40mm
Thickness
13.3mm
12mm
Lug-to-Lug
48.6mm
46mm
Crystal & Dial
2 specsAR Coating
Anti-reflective coating on inner surface
Inner
Lume
LumiBrite on hands, index(es) and bezel
None
Movement
3 specsCaliber
6R54
NH35 Warranty
Power Reserve
72h
40h
Jewels
24
25
Pricing
1 specsMSRP
—
$249
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