Editorial
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.
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.
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.
