Side by side

Oris Aquis Pro 4000mvsFortis Marinemaster M-40

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

Aquis Pro 4000m
OrisAquis Pro 4000m
MSRP $6,900
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

17 of 29 specs differ
Diameter
Aquis Pro 4000m49.5mm
Marinemaster M-4040mm
Power Reserve
Aquis Pro 4000m120 hoursh
Marinemaster M-4038h
Water Resistance
Aquis Pro 4000m4,000m
Marinemaster M-40300m
MSRP
Aquis Pro 4000m$6,900
Marinemaster M-40$3,520

Full specifications

Case

7 specs
Diameter
49.5mm
40mm
Thickness
13mm
Lug Width
26mm
21mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
4000m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Blue
Orange
Indices
Applied

Movement

5 specs
Caliber
CALIBRE 400
Sellita SW220-1
Beat Rate
4 vph
28,800 vph
Power Reserve
120 hoursh
38h
Jewels
21
26
Complications
Date
None

Pricing

1 specs
MSRP
$6,900
$3,520

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Oris Aquis Pro 4000m

The Oris Aquis Pro 4000m is widely acknowledged as a substantial dive tool, with reviewers and owners alike noting its impressive 49.5mm diameter and 23.4mm to 25mm thickness. Despite its size, the titanium case and comfortable rubber strap contribute to surprisingly good wearability for some, though others find its dimensions impractical for daily wear. The patented Rotation Safety System for the bezel is praised for its intelligence and functionality, while the in-house Calibre 400 movement offers a 120-hour power reserve and a 10-year warranty. One owner notes that the clasp's quick-adjust pushers can be unintentionally activated during watch removal. Overall, owners and reviewers regard the Oris Aquis Pro 4000m as a stunning, albeit chunky, tool watch whose impressive specifications are its primary draw.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

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