Side by side

Borealis Watch Co. Caloura 300mvsNaga Watches Opera

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

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Caloura 300m
Borealis Watch Co.Caloura 300m
MSRP $275
Opera
Naga WatchesOpera
MSRP $917
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Buy from Naga Watches ↗
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At a glance

11 of 29 specs differ
Diameter
Caloura 300m42mm
Opera39mm
Power Reserve
Caloura 300m40h
Opera—
Water Resistance
Caloura 300m300m
Opera100m
MSRP
Caloura 300m$275
Opera$917

Full specifications

Case

6 specs
Category
Diver
—
Diameter
42mm
39mm
Thickness
13.9mm
10mm
Lug-to-Lug
44.20mm
—
Lug Width
22mm
—
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Black
Lapislazuli
Lume
BGW9
None

Movement

2 specs
Caliber
NH35
Miyota 9039
Power Reserve
40h
—

Pricing

1 specs
MSRP
$275
—
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