Side by side
Castor Watches KOI DARKvsFortis 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
KOI DARK38mm
Marinemaster M-4040mm
Power Reserve
KOI DARK—
Marinemaster M-4038h
Water Resistance
KOI DARK50m
Marinemaster M-40300m
MSRP
KOI DARK—
Marinemaster M-40$3,520
Full specifications
Case
6 specsCategory
—
Diver
Diameter
38mm
40mm
Thickness
7mm
13mm
Lug Width
18mm
21mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m
Crystal & Dial
2 specsCrystal
Mineral
Sapphire
Dial Color
Copper
Orange
Movement
4 specsCaliber
Miyota 2035
Sellita SW220-1
Type
Quartz
Automatic
Power Reserve
—
38h
Jewels
25
26
Pricing
1 specsMSRP
—
$3,520
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Castor Watches KOI DARK vs Fortis Marinemaster M-40 gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Castor Watches ÁRBOL DARKvsFortis Marinemaster M-40Castor Watches Nº6 DARKvsFortis Marinemaster M-40Castor Watches LEONvsFortis Marinemaster M-40Fortis Marinemaster M-40vsMad Hudson Watches CD WatchMarathon Arctic OSAR 41mm AutomaticvsCastor Watches KOI DARKMarathon OSAR-D (Original SAR with Date) Automatic 41mmvsCastor Watches KOI DARK