The WAV515B is a model of the TAG Heuer Grand Carrera Calibre 6 RS, a luxury dress watch known for its "Rotating System" (RS) technology which replaces traditional small-second hands with a rotating disc. Key Specifications Case: 40.2mm diameter, stainless steel with a fixed 18k yellow gold bezel. Movement: Calibre 6 RS automatic, COSC-certified chronometer with a 44-hour power reserve. Dial: Silver with circular guilloché texture, gold-toned luminous hands, and a date window at 3 o'clock. Crystal: Scratch-resistant sapphire on both the front and the exhibition caseback. Water Resistance: 100 meters (330 feet).