Side by side
Helgray Poseidon Diver (Automatic)vsSheffield GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
8 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
GMT40mm
Power Reserve
Poseidon Diver (Automatic)40h
GMT—
Water Resistance
Poseidon Diver (Automatic)300m
GMT200m
MSRP
Poseidon Diver (Automatic)$249
GMT—
Full specifications
Case
4 specsCategory
Diver
GMT
Thickness
12mm
13mm
Lug-to-Lug
46mm
48mm
Water Resistance
300m
200m
Crystal & Dial
1 specsDial Color
Black
Blue
Movement
2 specsCaliber
NH35 Warranty
Seiko NH34
Power Reserve
40h
—
Pricing
1 specsMSRP
$249
—
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