Side by side
Borealis Watch Co. Caloura 300mvsGrand Seiko SBGA375
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
SBGA37540mm
Power Reserve
Caloura 300m40h
SBGA37572h
Water Resistance
Caloura 300m300m
SBGA375100m
MSRP
Caloura 300m$275
SBGA375$5,600
Full specifications
Case
6 specsCategory
Diver
Dress
Diameter
42mm
40mm
Thickness
13.9mm
12.5mm
Lug-to-Lug
44.20mm
46.2mm
Lug Width
22mm
19mm
Water Resistance
300m
100m
Crystal & Dial
2 specsAR Coating
Inner
Yes
Lume
BGW9
None
Movement
3 specsCaliber
NH35
9R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Pricing
1 specsMSRP
$275
$5,600
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