Side by side
Borealis Watch Co. NeptunovsSeiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Neptuno40.00mm
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition42.5mm
Power Reserve
Neptuno40h
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition45h
Water Resistance
Neptuno300m
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition100m
MSRP
Neptuno$390
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition$3,000
Full specifications
Case
6 specsCategory
Diver
Chronograph
Diameter
40.00mm
42.5mm
Thickness
14.10mm
15.1mm
Lug-to-Lug
47.20mm
50mm
Lug Width
20mm
20mm
Water Resistance
300m
100m
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands and index(es)
Movement
3 specsCaliber
NH38
8R46
Power Reserve
40h
45h
Jewels
25
34
Pricing
1 specsMSRP
$390
$3,000
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