Watch Almanac
Oris

Aquis Pro 4000m

Ref. 01 400 7777 7155-Set

Case diameter
49.5 mm
Manufacturer spec
Lug-to-lug
55 mm
Measured in a published review
Thickness
23.4 mm
Measured in a published review
Lug width
26 mm
Manufacturer spec

Retail price $6,900 (US, Oct 2026)

Lugs overhang
Wrist flat: 55.1 mmLug-to-lug: 55 mm

How the Aquis Pro 4000m wears

Its lugs add only 5.5 mm to the 49.5 mm case, against 7 mm typical across the almanac, so it wears smaller than its diameter suggests.

On our fit model it sits best on wrists from 7.5" to 8.5" (19.1–21.6 cm); below 7.5" the lugs start to reach the edge of the wrist.

At 23.4 mm thick it is thicker than 100% of the 124 other dive watches we've measured, so expect it to sit tall on the wrist.

Its 26 mm lug width is unusual, so check strap sizes carefully.

Will the Aquis Pro 4000m fit your wrist?

With a 55 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmLugs overhang
7"55.1 mmLugs overhang
7.5"59.1 mmIdeal fit
8"63 mmIdeal fit

Specifications

Reference
01 400 7777 7155-Set
Collection
Aquis
Status
In production
Case material
titanium
Crystal
sapphire
Water resistance
4000 m
Bezel
unidirectional, Rotation Safety System lock, ceramic top ring
Dial
blue
Strap / bracelet
rubber strap (set)
Style
Dive

Movement

Caliber
Oris Calibre 400
Type
automatic
Power reserve
120 hours
Frequency
28,800 vph (4 Hz)

Takes 26 mm straps. See other 26 mm watches and straps.

More Aquis references

Sources