Side by side

Borealis Watch Co. NeptunovsGrand Seiko SLGB023

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Neptuno
Borealis Watch Co.Neptuno
MSRP $390
SLGB023
Grand SeikoSLGB023
MSRP $12,400

At a glance

11 of 29 specs differ
Diameter
Neptuno40.00mm
SLGB02340.8mm
Power Reserve
Neptuno40h
SLGB02372h
Water Resistance
Neptuno300m
SLGB023300m
MSRP
Neptuno$390
SLGB023$12,400

Full specifications

Case

5 specs
Diameter
40.00mm
40.8mm
Thickness
14.10mm
12.9mm
Lug-to-Lug
47.20mm
48.5mm
Lug Width
20mm
21mm
Material
Stainless Steel
Titanium

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

3 specs
Caliber
NH38
9RB1
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$390
$12,400

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