Side by side
Helgray Poseidon Diver (Automatic)vsSeestern S446 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
S446 GMT39.5mm
Power Reserve
Poseidon Diver (Automatic)40h
S446 GMT41hh
Water Resistance
Poseidon Diver (Automatic)300m
S446 GMT100m
MSRP
Poseidon Diver (Automatic)$249
S446 GMT$299
Full specifications
Case
6 specsCategory
Diver
GMT
Diameter
40mm
39.5mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
2 specsCrystal Shape
Flat
Domed
Dial Color
Black
Cream
Movement
5 specsCaliber
NH35 Warranty
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$249
$299
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