Side by side
Aera Instruments M-1vsLongines SPIRIT ZULU TIME
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
21 of 29 specs differDiameter
M-139mm
SPIRIT ZULU TIME42mm
Power Reserve
M-142h
SPIRIT ZULU TIME72h
Water Resistance
M-1100m
SPIRIT ZULU TIME100m
MSRP
M-1—
SPIRIT ZULU TIME$3,550
Full specifications
Case
8 specsCategory
—
GMT
Diameter
39mm
42mm
Thickness
13.14mm
14.1mm
Lug-to-Lug
47.6mm
49.4mm
Lug Width
20mm
22mm
Material
Stainless Steel
Ceramic
Finish
Brushed and polished
—
Caseback
Solid
—
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
Both sides
Dial Color
Dune
Black
Indices
Applied
Applied Arabic numerals
Movement
8 specsCaliber
Sellita SW216-1
L844.4
Type
Manual
Automatic
Beat Rate
28,800 vph
25,200 vph
Power Reserve
42h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date, 24 hours hand with time zone mechanism
Pricing
1 specsMSRP
—
$3,550
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