The Wristwatch Field Guide

Oris AquisPro 4000m Calibre 400

01 400 7777 7155-Set

The Oris AquisPro 4000m Calibre 400 is a current-production diver watch with a grey titanium (grade not stated) case. It measures 49.5 mm across, 23.4 mm thick, and is water resistant to 4000 m. Inside is the Oris Calibre 400 automatic movement, with 120 h power reserve. Complications: Date. Priced from $6,500 (Approximate US retail (CHF 5,700 incl. tax).). Brand origin: Switzerland.

Titanium and ceramic diver watchesTitaniumDivers
Reference
01 400 7777 7155-Set
Type
Diver
Price
$6,500 · Approximate US retail (CHF 5,700 incl. tax).
Case diameter
49.5 mm
Thickness
23.4 mm
Lug-to-lug
–
Water resistance
4000 m
Weight
–
Origin
Switzerland
Movement
Automatic
Caliber
Oris Calibre 400
Power reserve
120 h
Complications
Date
Material
Titanium
Grade / type
Titanium (grade not stated)
Colour
Grey
Hardness
–
Construction
–
Surface treatment
None
Caseback
–
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Titanium bracelet or rubber strap
Matching bracelet
Optional (or strap)
Crystal
Sapphire
Display back
No
Dial
Ceramic top ring
Lume
Super-LumiNova
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: Oris (maker) / Monochrome Maker / listing ↗
Facts are free to cite with a link.
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Alternatives to the Oris AquisPro 4000m Calibre 400

Ralf Tech WRX Electric Space Millenium x CNESRalf TechWRX Electric Space Millenium x CNES$5,00047.5 mm95 gDiversame category · same style · shared complications · similar priceRalf Tech WRX Electric Galaxy Millenium x CNESRalf TechWRX Electric Galaxy Millenium x CNES$5,62047.5 mm96 gDiversame category · same style · shared complications · similar price
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TAG HeuerAquaracer Professional 500 Date Titanium$5,40042.0 mm120 gDiversame category · same style · shared complications · similar priceTudor Pelagos 39TudorPelagos 39$5,62539.0 mm11.8 mm thick110.8 gDiversame category · same style · shared complications · similar price
TAG HeuerAquaracer Professional 1000 Superdiver Titanium$6,60045.0 mm15.75 mm thickDiversame category · same style · shared complications · similar price

More titanium and ceramic watches from Oris

OrisProPilot X Calibre 400 (Titanium)$4,80039.0 mm93 gPilot
OrisAquis Pro 1000m$3,80049.5 mm16.6 mm thickDiver
OrisBig Crown ProPilot X Calibre 115 (Titanium)$7,60044.0 mmPilot
OrisAquis Date Titanium 43.5mm$2,80043.5 mm121 gDiver
OrisAquisPro Date Calibre 400$5,30049.5 mm158 gDiver

Frequently asked questions

What is the case material of the Oris AquisPro 4000m Calibre 400?

The Oris AquisPro 4000m Calibre 400 has a grey titanium (grade not stated) case. It is recorded at medium confidence pending a maker-stated material.

What size is the Oris AquisPro 4000m Calibre 400?

It is 49.5 mm in diameter, 23.4 mm thick, and water resistant to 4000 m.

How much does the Oris AquisPro 4000m Calibre 400 cost, and is it available?

It is current-production and lists from $6,500.

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