Side by side
Aera Instruments M-1vsSeiko King Seiko KSK
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
M-139mm
King Seiko KSK36.1mm
Power Reserve
M-142h
King Seiko KSK72h
Water Resistance
M-1100m
King Seiko KSK100m
MSRP
M-1—
King Seiko KSK$1,900
Full specifications
Case
5 specsCategory
—
Dress
Diameter
39mm
36.1mm
Thickness
13.14mm
11.6mm
Lug-to-Lug
47.6mm
43mm
Lug Width
20mm
19mm
Crystal & Dial
4 specsCrystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Dune
Black
Lume
Super-LumiNova
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Sellita SW216-1
6R51
Type
Manual
Automatic
Power Reserve
42h
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$1,900
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