Aquis Date 41.5mm

The Aquis Date 41.5mm is Oris's volume-production dive tool, built to 300m water resistance with a ceramic bezel and a case size that sits comfortably between sport and everyday wear. Reference 01 733 7766 4135 is the steel-bracelet configuration at the core of the Aquis range, and it competes honestly on specification against watches from Tissot and Longines that cost nearly as much. If you want a Swiss mechanical diver with credible depth rating and genuine brand heritage at this price point, this is the ref to benchmark against.

What it is

Oris launched the Aquis in 2013 as a replacement for the TT1 Divers line, repositioning the brand firmly in the sport-watch segment. The 41.5mm case with date was the anchor reference from early production, carried forward through a substantial update in 2020 that brought a redesigned case profile, improved bracelet, and a new crown-lock mechanism. Caliber 733 is a modified Sellita SW200-1 with Oris's proprietary rotor and regulation adjustments; it is a capable if unremarkable movement.

A subset of variants added a helium escape valve at the 9-o'clock position for saturation diving use, though few buyers will ever need it. The dial and strap combinations have proliferated significantly since 2017, making the Aquis one of the most configurable entry-level dive watches in Swiss production.

Buying notes

The bracelet on pre-2020 examples had meaningful play at the links and a clasp that wore quickly; verify link tightness and clasp function before buying used. Crown-lock failure is the most common service issue reported on earlier references: confirm the crown screws down and seats flush without resistance or slop. Dial color consistency varies across production runs, so matching a replacement dial to an existing watch is harder than it looks.

The ceramic bezel insert is scratch-resistant but can chip at the edges from impact; inspect the bezel under light at an angle. Some grey-market examples have been sold with aftermarket bracelets substituted for the factory steel; check that the bracelet end-links are OEM Oris and fit flush against the lugs.

Market read

New retail runs roughly $1,550 to $1,800 USD depending on dial and strap configuration. Used pre-2020 examples in good condition trade at $900 to $1,200, while post-2020 references with the improved bracelet hold closer to $1,100 to $1,400. Special-edition and limited dial variants carry a modest premium of $100 to $200 over standard references at resale, though they are not scarce enough to command collector prices.

The Aquis competes directly with the Tissot Seastar 1000 and Longines HydroConquest on price; the Oris carries a slight value edge at resale over Tissot but trails Longines, which benefits from stronger secondary-market recognition.

Service expectations

Caliber 733 (Sellita SW200-1 base) carries an Oris-recommended service interval of five to eight years. An authorized Oris service runs approximately $300 to $450 USD depending on parts required; independent watchmakers familiar with the SW200 platform can typically handle it for $150 to $250 with equivalent quality results. Water resistance resealing should be performed at every service given the dive-watch application.