Side by side
Borealis Watch Co. Caloura 300mvsGrand Seiko SLGA015
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Caloura 300m42mm
SLGA01543.8mm
Power Reserve
Caloura 300m40h
SLGA015120h
Water Resistance
Caloura 300m300m
SLGA015200m
MSRP
Caloura 300m$275
SLGA015$12,600
Full specifications
Case
6 specsDiameter
42mm
43.8mm
Thickness
13.9mm
13.8mm
Lug-to-Lug
44.20mm
51.5mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m
Crystal & Dial
2 specsAR Coating
Inner
Yes
Lume
BGW9
None
Movement
3 specsCaliber
NH35
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h
Pricing
1 specsMSRP
$275
$12,600
Follow this matchup
Get a note when Borealis Watch Co. Caloura 300m vs Grand Seiko SLGA015 gets more votes, a community discussion, or a price drop. No account needed.
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.