Side by side
Fortis Marinemaster M-40vsSheffield Deep Gray 300
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Marinemaster M-4040mm
Deep Gray 30042mm
Power Reserve
Marinemaster M-4038h
Deep Gray 30040h
Water Resistance
Marinemaster M-40300m
Deep Gray 300300m
MSRP
Marinemaster M-40$3,520
Deep Gray 300$258
Full specifications
Case
5 specsCategory
Diver
—
Diameter
40mm
42mm
Thickness
13mm
13.8mm
Lug-to-Lug
—
52mm
Lug Width
21mm
22mm
Crystal & Dial
1 specsDial Color
Orange
—
Movement
3 specsCaliber
Sellita SW220-1
Seiko NH35
Power Reserve
38h
40h
Jewels
26
25
Pricing
1 specsMSRP
$3,520
—
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