Side by side
Aera Instruments M-1vsFortis Marinemaster M-40
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
M-139mm
Marinemaster M-4040mm
Power Reserve
M-142h
Marinemaster M-4038h
Water Resistance
M-1100m
Marinemaster M-40300m
MSRP
M-1—
Marinemaster M-40$3,520
Full specifications
Case
6 specsCategory
—
Diver
Diameter
39mm
40mm
Thickness
13.14mm
13mm
Lug-to-Lug
47.6mm
—
Lug Width
20mm
21mm
Water Resistance
100m
300m
Crystal & Dial
2 specsDial Color
Dune
Orange
Lume
Super-LumiNova
None
Movement
4 specsCaliber
Sellita SW216-1
Sellita SW220-1
Type
Manual
Automatic
Power Reserve
42h
38h
Jewels
25
26
Pricing
1 specsMSRP
—
$3,520
Follow this matchup
Get a note when Aera Instruments M-1 vs Fortis Marinemaster M-40 gets more votes, a community discussion, or a price drop. No account needed.
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
CWC Cabot Steel Limited Edition WatchvsFortis Marinemaster M-40Fortis Marinemaster M-40vsFarer Lethbridge GoldFarer CUSHION CASEvsFortis Marinemaster M-40Fortis Marinemaster M-40vsAevig THOR manualwind dresswatchMarathon Arctic OSAR 41mm AutomaticvsAera Instruments M-1Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsAera Instruments M-1