Side by side
Helgray Poseidon Diver (Automatic)vsSheffield 1A
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
7 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
1A40mm
Power Reserve
Poseidon Diver (Automatic)40h
1A—
Water Resistance
Poseidon Diver (Automatic)300m
1A200m
MSRP
Poseidon Diver (Automatic)$249
1A$223
Full specifications
Case
2 specsThickness
12mm
12.8mm
Water Resistance
300m
200m
Crystal & Dial
2 specsDial Color
Black
White/Blue
Lume
None
Swiss blue lume
Movement
2 specsCaliber
NH35 Warranty
Seiko NH35A
Power Reserve
40h
—
Pricing
1 specsMSRP
$249
$223
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