Side by side
Oblvlo FM SL Day-Date SquarevsFortis Marinemaster M-40
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
FM SL Day-Date Square39mm
Marinemaster M-4040mm
Power Reserve
FM SL Day-Date Square42h
Marinemaster M-4038h
Water Resistance
FM SL Day-Date Square50m
Marinemaster M-40300m
MSRP
FM SL Day-Date Square$158
Marinemaster M-40$3,520
Full specifications
Case
5 specsCategory
Dress
Diver
Diameter
39mm
40mm
Thickness
11mm
13mm
Lug-to-Lug
46mm
—
Water Resistance
50m
300m
Crystal & Dial
1 specsDial Color
Black
Orange
Movement
3 specsCaliber
Miyota 8215
Sellita SW220-1
Power Reserve
42h
38h
Jewels
21
26
Pricing
1 specsMSRP
$158
$3,520
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