Side by side
Helgray Poseidon Diver (Automatic)vsSeestern S450 Ocean Star
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
S450 Ocean Star40mm
Power Reserve
Poseidon Diver (Automatic)40h
S450 Ocean Star41h
Water Resistance
Poseidon Diver (Automatic)300m
S450 Ocean Star100m
MSRP
Poseidon Diver (Automatic)$249
S450 Ocean Star$299
Full specifications
Case
3 specsLug-to-Lug
46mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Black
White
Lume
None
Tritium
Movement
5 specsCaliber
NH35 Warranty
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
40h
41h
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$249
$299
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