Side by side
Helgray Poseidon Diver (Automatic)vsFormex Reef 39.5 mm
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
Reef 39.5 mm39.5mm
Power Reserve
Poseidon Diver (Automatic)40h
Reef 39.5 mm56h
Water Resistance
Poseidon Diver (Automatic)300m
Reef 39.5 mm300m
MSRP
Poseidon Diver (Automatic)$249
Reef 39.5 mm$2,230
Full specifications
Case
4 specsDiameter
40mm
39.5mm
Thickness
12mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
20mm
22mm
Crystal & Dial
2 specsDial Color
Black
Bahama Blue
Lume
None
Super-LumiNova
Movement
2 specsCaliber
NH35 Warranty
Sellita SW300-1
Power Reserve
40h
56h
Pricing
1 specsMSRP
$249
$2,230
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