Side by side
Aera Instruments M-1vsSeestern S446 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
M-139mm
S446 GMT39.5mm
Power Reserve
M-142h
S446 GMT41hh
Water Resistance
M-1100m
S446 GMT100m
MSRP
M-1—
S446 GMT$299
Full specifications
Case
5 specsCategory
—
GMT
Diameter
39mm
39.5mm
Thickness
13.14mm
13mm
Lug-to-Lug
47.6mm
47mm
Material
Stainless Steel
316L Stainless Steel
Crystal & Dial
3 specsCrystal Shape
Flat
Domed
Dial Color
Dune
Cream
Lume
Super-LumiNova
None
Movement
6 specsCaliber
Sellita SW216-1
Seiko NH34A GMT
Type
Manual
Automatic
Beat Rate
28,800 vph
3 vph
Power Reserve
42h
41hh
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
—
$299
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