The Oris Regulateur "Der Meistertaucher" (Reference: 01 649 7541 7164-Set / 649-7541P) is a highly iconic, professional-grade Swiss dive watch celebrated for its unique layout and exceptional deep-sea utility. 

Designed with a focus on vital timing accuracy for professional divers, its standout characteristic is the regulator dial configuration. By separating the hands, the central layout isolates the large minute hand. This configuration allows divers to track elapsed dive time or decompression stages instantly against the rotating bezel without any risk of the hour hand obscuring the minutes.

• Case Material: High-grade, lightweight, and corrosion-resistant multi-piece Titanium.

• Dimensions: 44mm diameter with a case thickness of roughly 14.8mm to 15.25mm. It features a distinct "donut" or "cup" shaped TT1 case architecture that allows it to sit smaller and more comfortably on the wrist than its dimensions suggest. 

• Dial: Matte black wave-patterned dial featuring a central minute hand, a subsidiary hour sub-dial at 3 o'clock, running small seconds at 9 o'clock, and an instantaneous date window at 6 o'clock. 

• Movement: Oris Caliber 649 (built on a reliable ETA 2836-2 base), an automatic winding mechanism offering a 38-hour power reserve and operating at a frequency of 28,800 vibrations per hour (4Hz).

• Water Resistance: An incredible 1,000 meters (100 bar / 3,300 feet) depth rating, fully equipped with a screw-down security crown and an integrated automatic helium escape valve. 

• Crystal: Domed sapphire crystal treated with an anti-reflective coating on the interior surface. 

• The Original Presentation Kit: This reference originally debuted as a full "tool kit" presented in a heavy-duty waterproof case, including both a multi-link titanium bracelet and a black rubber dive strap, complete with custom strap-changing tools and a tactical dive flashlight.