Side by side
Borealis Watch Co. NeptunovsSeiko Prospex Sea Save the Ocean Special Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Neptuno40.00mm
Prospex Sea Save the Ocean Special Edition45mm
Power Reserve
Neptuno40h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
Neptuno300m
Prospex Sea Save the Ocean Special Edition200m
MSRP
Neptuno$390
Prospex Sea Save the Ocean Special Edition$625
Full specifications
Case
5 specsDiameter
40.00mm
45mm
Thickness
14.10mm
13.2mm
Lug-to-Lug
47.20mm
47.7mm
Lug Width
20mm
22mm
Water Resistance
300m
200m
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
NH38
4R36
Power Reserve
40h
41h
Jewels
25
24
Pricing
1 specsMSRP
$390
$625
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