Side by side
Aera Instruments M-1vsSheffield 1A SCR II Blue
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
M-139mm
1A SCR II Blue40mm
Power Reserve
M-142h
1A SCR II Blue40h
Water Resistance
M-1100m
1A SCR II Blue200m
MSRP
M-1—
1A SCR II Blue$278
Full specifications
Case
4 specsDiameter
39mm
40mm
Thickness
13.14mm
13mm
Lug-to-Lug
47.6mm
48mm
Water Resistance
100m
200m
Crystal & Dial
2 specsDial Color
Dune
Blue
Lume
Super-LumiNova
None
Movement
3 specsCaliber
Sellita SW216-1
Seiko NH35
Type
Manual
Automatic
Power Reserve
42h
40h
Pricing
1 specsMSRP
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