Side by side

Aera Instruments M-1vsSpinnaker Dumas Automatic

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

M-1
Aera InstrumentsM-1
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

13 of 29 specs differ
Diameter
M-139mm
Dumas Automatic44mm
Power Reserve
M-142h
Dumas Automatic40h
Water Resistance
M-1100m
Dumas Automatic300m
MSRP
M-1—
Dumas Automatic$239

Full specifications

Case

7 specs
Category
—
Diver
Diameter
39mm
44mm
Thickness
13.14mm
15mm
Lug-to-Lug
47.6mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
Dune
Blue
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW216-1
SII NH35A
Type
Manual
Automatic
Power Reserve
42h
40h

Pricing

1 specs
MSRP
—
$239

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