Oris Aquis Depth Gauge – Back into the deep

Aquis Depth Gauge
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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. 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.

Aquis Depth Gauge

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.

Oris Aquis Depth Gauge

The new Oris 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

Oris Aquis Depth Gauge: How it works

The Oris Aquis Depth Gauge uses a complex scientific principle to create an easy-to-use depth gauge function that’s also safe and accurate. Here’s how it – and the new Quick Strap Change system – works.

Oris Aquis Depth Gauge

The science

Behind the Oris Aquis Depth Gauge’s inventive solution for measuring depth underwater is the BoyleMariotte 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, the channel and the 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 seal

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).

Oris Aquis Depth Gauge

The Quick Strap Change system

The second generation of the Oris 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 Technical Specifications and Price

Ref. no. 01 733 7755 4154-Set MB – Presented in a waterproof Peli case diving box


  • Centre hands for hours, minutes and seconds
  • Date window at 6 o’clock
  • Instantaneous date
  • Date corrector
  • Fine timing device and stop-second


  • Number: Oris 733
  • Dimensions: Ø 25.60 mm, 11 1/2’’’
  • Winding: Automatic
  • Power reserve: 38 hours
  • Vibrations: 4 Hz (28’800 A/h)
  • Jewels 26


  • 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


  • Design Black
  • Luminous material material Hands and indices with Super-LumiNova®


  • Stainless steel metal bracelet or black rubber strap,
  • Oris-patented Quick Strap Change system and Oris-developed folding security clasp with extension and safety anchor systems


  • CHF 3’700 / 3’500 EUR

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