Side by side

Fortis Marinemaster M-40vsLIV Watches P-51 Big Pilot

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Marinemaster M-40

Fortis Marinemaster M-40

M-40

MSRP $3,520

P-51 Big Pilot

LIV Watches P-51 Big Pilot

pre-loved-build-p-51

MSRP $2,100

At a glance

11 of 29 specs differ

Diameter

Marinemaster M-4040mm

P-51 Big Pilot44mm

Power Reserve

Marinemaster M-4038h

P-51 Big Pilot—

Water Resistance

Marinemaster M-40300m

P-51 Big Pilot20m

MSRP

Marinemaster M-40$3,520

P-51 Big Pilot$2,100

Full specifications

Case

6 specs

Category

Diver

—

Diameter

40mm

44mm

Thickness

13mm

—

Lug Width

21mm

—

Material

Stainless Steel

Titanium

Water Resistance

300m

20m

Crystal & Dial

1 specs

Dial Color

Orange

Black

Movement

3 specs

Caliber

Sellita SW220-1

—

Power Reserve

38h

—

Jewels

26

25

Pricing

1 specs

MSRP

$3,520

$2,100

Follow this matchup

Get a note when Fortis Marinemaster M-40 vs LIV Watches P-51 Big Pilot gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Marathon Arctic OSAR 41mm Automatic

Arctic OSAR 41mm Automatic

6 watches · 6 variantsOSAR

41mm·Automatic·300m WR

Bremont Supermarine Chrono

Supermarine Chrono

8 watches · 39 variantsSupermarine

43mm·Automatic·300m WR

Helgray Vigilante Automatic - Classic Black (Refurbished)

Vigilante Automatic - Classic Black (Refurbished)

4 variantsVigilante Automatic - Classic Black (Refurbished)

45mm·Automatic·100m WR

Fortis Novonaut N-42

Novonaut N-42

4 variantsNovonaut

42mm·Automatic·300m WR

CWC Arctic Radar Automatic Diver Watch

Arctic Radar Automatic Diver Watch

Ref. cwc-arctic-radar-automatic-diver-watch-white-dial

41mm·Automatic·300m WR

Bremont Terra Nova 42.5 Chronograph

Terra Nova 42.5 Chronograph

3 watches · 23 variantsTerra Nova

42.5mm·Automatic·100m WR

CWC RN81 Clearance Diver Automatic Watch

RN81 Clearance Diver Automatic Watch

Ref. cwc-rn81-clearance-diver-watch

41mm·Automatic·300m WR

Ikepod Hemipod HE11

Hemipod HE11

Ref. 253-hemipod-day-daye-orange-dial

44mm·Automatic

All alternatives to the Marinemaster M-40 →All alternatives to the P-51 Big Pilot →

Explore the full catalog

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Marathon Arctic OSAR 41mm AutomaticvsLIV Watches P-51 Big Pilot Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsLIV Watches P-51 Big Pilot Marathon Arctic OSAR 36mm AutomaticvsLIV Watches P-51 Big Pilot CWC Arctic Radar Automatic Diver WatchvsLIV Watches P-51 Big Pilot Fortis Marinemaster M-40vsLIV Watches P-51 Big Pilot Bremont Supermarine ChronovsFortis Marinemaster M-40

Edit this comparison Add another watch Explore more 39–45mm watches