Side by side
Decima GatekeepervsHelgray Poseidon Diver (Automatic)
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Gatekeeper38mm
Poseidon Diver (Automatic)40mm
Power Reserve
Gatekeeper42h
Poseidon Diver (Automatic)40h
Water Resistance
Gatekeeper50m
Poseidon Diver (Automatic)300m
MSRP
Gatekeeper$599
Poseidon Diver (Automatic)$249
Full specifications
Case
5 specsCategory
—
Diver
Diameter
38mm
40mm
Thickness
9.9mm
12mm
Lug Width
—
20mm
Water Resistance
50m
300m
Crystal & Dial
2 specsAR Coating
Yes
Inner
Dial Color
White
Black
Movement
2 specsCaliber
Miyota 9039
NH35 Warranty
Power Reserve
42h
40h
Pricing
1 specsMSRP
$599
$249
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