Side by side

Aera Instruments M-1vsMelbourne Watch Company Portsea

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

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M-1
Aera InstrumentsM-1
Portsea
Melbourne Watch CompanyPortsea
MSRP $597
Buy from Aera Instruments ↗
Buy used on eBay ↗
Buy from Melbourne Watch Company ↗
Buy used on eBay ↗

At a glance

10 of 29 specs differ
Diameter
M-139mm
Portsea40mm
Power Reserve
M-142h
Portsea—
Water Resistance
M-1100m
Portsea100m
MSRP
M-1—
Portsea$597

Full specifications

Case

4 specs
Diameter
39mm
40mm
Thickness
13.14mm
13mm
Lug-to-Lug
47.6mm
—
Lug Width
20mm
—

Crystal & Dial

2 specs
Dial Color
Dune
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW216-1
Miyota Cal. 9122
Type
Manual
Automatic
Power Reserve
42h
—

Pricing

1 specs
MSRP
—
—
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