Side by side
Aera Instruments M-1vsBorealis Watch Co. Caloura 300m
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
M-139mm
Caloura 300m42mm
Power Reserve
M-142h
Caloura 300m40h
Water Resistance
M-1100m
Caloura 300m300m
MSRP
M-1—
Caloura 300m$275
Full specifications
Case
6 specsCategory
—
Diver
Diameter
39mm
42mm
Thickness
13.14mm
13.9mm
Lug-to-Lug
47.6mm
44.20mm
Lug Width
20mm
22mm
Water Resistance
100m
300m
Crystal & Dial
2 specsDial Color
Dune
Black
Lume
Super-LumiNova
BGW9
Movement
3 specsCaliber
Sellita SW216-1
NH35
Type
Manual
Automatic
Power Reserve
42h
40h
Pricing
1 specsMSRP
—
$275
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