Side by side
Helgray Poseidon Diver (Automatic)vsSinn U18
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Poseidon Diver (Automatic)40mm
U1844mm
Power Reserve
Poseidon Diver (Automatic)40h
U1842h
Water Resistance
Poseidon Diver (Automatic)300m
U182,000m
MSRP
Poseidon Diver (Automatic)$249
U18$3,488
Full specifications
Case
7 specsDiameter
40mm
44mm
Thickness
12.8mm
15.5mm
Lug-to-Lug
46mm
—
Material
Stainless Steel
high-strength
Finish
Brushed and polished
—
Water Resistance
300m
2000m
Caseback
Solid
—
Crystal & Dial
3 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Indices
Applied
—
Movement
2 specsCaliber
NH35 Warranty
Sellita SW300-1
Power Reserve
40h
42h
Pricing
1 specsMSRP
$249
$3,488
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