Back into the deep – Aquis Depth Gauge

Text: Press
Photo: Oris

Oris is proud to announce the second-generation Aquis Depth Gauge, one of the world’s most innovative and most distinctive high-performance diver’s watches

Known affectionately as ‘the watch with a hole’, the Aquis Depth Gauge uses the scientific principles of the Boyle-Mariotte Law to create a gauge that clearly measures depth during a dive. The patented system works by allowing water through a hole cut into the sapphire crystal at 12 o’clock and into a channel milled around the outer edge of the crystal. This creates a watermark that corresponds to a gauge clearly indicated in yellow on the dial.

01 733 7755 4154 Set MB Oris Aquis Depth Gauge HighRes 12109 min 1

The new model captures and refines the spirit and functionality of the original, delivering even higher performance when it really matters – deep below the ocean surface.

The new Aquis Depth Gauge has three key improvements:

1. Depth gauge system
In the new watch, the process used to mill the channel into the outer edge of the crystal has been refined so the accuracy and legibility of the gauge are increased.

2. Metres-to-feet conversion chart
The case back has been re-engineered so the metres-to-feet conversion chart is always set at 90 degrees to the 12 o’clock position. For divers relying on the chart on a regular basis, this will greatly enhance their experience of the watch.

3. Oris’s new patented Quick Strap Change system Owners can now switch the stainless steel metal bracelet and rubber strap quickly, safely and securely without needing a tool or a visit to a jeweller.

Oris Aquis Depth Gauge
How it works?

The Aquis Depth Gauge uses a complex scientific principle to create an easy-to-use depth gauge function that’s also safe and accurate. Behind the Aquis Depth Gauge’s inventive solution for measuring depth underwater is the Boyle- Mariotte Law, which states for gases that ‘pressure x volume = constant’. Oris’s engineers calculated that the volume of air in a channel milled into the sapphire crystal would reduce during a dive, compressed under pressure. So during a dive, the volume of air compresses, allowing water to enter the channel. The air then decompresses during an ascent, forcing the water out of the hole. Oris has patented this development.

Oris Aquis Depth Gauge

The hole leading to the channel milled into the outer edge of the sapphire crystal is at 12 o’clock. On dry land, it’s filled with air. On entering the water, that air is compressed by water pressure. Water then enters the hole and begins to fill the space created in the channel. This in turn creates a watermark visible through the crystal. The watermark corresponds to a yellow gauge running around the outside of the dial, and the two combine to indicate depth. The second- generation watch has a more finely grained channel than before, making the indication even clearer. It’s an inventive solution that demonstrates Oris’s engineering philosophy to find clever, practical solutions to complex problems.


Oris Aquis Depth Gauge
The Aquis Depth Gauge allows water into the crystal, but it doesn’t allow water into the watch itself – this would damage the watch’s automatic mechanical movement. Oris engineered the watch so that water can only enter the channel through the hole in the crystal. A gasket around the crystal seals the watch, and is so reliable that Oris has certified the watch as water-resistant to 50 bar (500 metres). The second generation of the Aquis Depth Gauge is equipped with the independent Swiss watch company’s patented strap change system. A mechanism built into the stainless steel metal bracelet and the black rubber strap means that the wearer can quickly and simply switch from one to the other and back again, without the need for a tool or a visit to a jeweller.

Oris Aquis Depth Gauge

Ref. no. 01 733 7755 4154-Set MB

Material Multi-piece stainless steel case, uni-directional rotating bezel with ceramic insert
Size 45.80 mm, 1.803 inches
Top glass Sapphire, domed on both sides, double-sided anti-reflective coating
Case back Stainless steel, screwed, engraved with metres-to-feet conversion chart
Operating devices Stainless steel screw-in security crown
Water resistance 50 bar (500 m)
Interhorn width 24 mm

Number Oris 733
Dimensions Ø 25.60 mm, 11 1/2’’’
Functions Centre hands for hours, minutes and seconds, date window at 6 o’clock, instantaneous date, date corrector, fine timing device and stop-second
Winding Automatic
Power reserve 38 hours
Vibrations 4 Hz (28’800 A/h)
Jewels 26

Design Black
Luminous material material Hands and indices with Super-LumiNova® Bracelet/strap Stainless steel metal bracelet or black rubber strap, both with Oris-patented Quick Strap Change system and Oris-developed folding security clasp with extension and safety anchor systems

Availability May 2021
Swiss retail price CHF 3’700 MB, 3’600 RS

Presented in a waterproof Peli case diving box

Categories: PRESS