Helgray Poseidon Diver (Automatic)vsSpinnaker Spence 300
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Poseidon Diver (Automatic)

Spence 300
Diameter
40mm
40mm
Lug-to-Lug
n/a
48mm
Thickness
12.8mm
11.5mm
lowest
Water Resistance
300m
300m
MSRP
$249
lowest
$650
Movement
Seiko NH35
Seiko NH35
Case
4 specsThickness
12.8mm
11.5mm
Lug-to-Lug
n/a
48mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Crystal & Dial
1 specsDial Color
n/a
Aquamarine
Pricing
1 specsMSRP
$249
$650
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