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Home/Browse/Borealis Watch Co./Caloura 300m
Borealis Watch Co. Caloura 300m
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Borealis Watch Co. Caloura 300m

DiverMicrobrand
4 Variants
Lume:BGW9
Buy from Borealis Watch Co. ↗
Buy used on eBay ↗
Retail MSRPIn stock
$275
Low
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Avg
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High
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Buy from Borealis Watch Co.
Buy used on eBay
Alternatives
Case
42mm
Power Reserve
—
Movement
Automatic
Water Resistance
300m
Crystal
Sapphire
01

Case Dimensions

Diameter42mm
Thickness—
Lug-to-Lug—
Lug Width—
02

Case Build

MaterialStainless Steel
Water Resistance300m
03

Crystal & Dial

CrystalSapphire
LumeBGW9
04

Movement

Caliber
Seiko NH35
TypeAutomatic
Beat Rate—
Power Reserve—
Jewels—
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleMatte
BezelRotating (dive)
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026

Photos

In a nutshell

The Borealis Watch Co. Caloura 300m is an automatic diver watch, with a 42mm stainless steel case, 13.9mm thick, powered by the Seiko NH35 movement. Water resistance is rated to 300m, under a sapphire crystal. Manufacturer MSRP is $275.

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