Patek Philippe Aquanaut Date Black Dial 5167A 2018 [Preowned]Overview The Patek Philippe Aquanaut Date 5167A is a masterclass in versatility, blending sporty elegance with a contemporary edge. Its 40mm stainless steel case features sleek, rounded contours that give the watch a refined yet robust look, making it suitable for both casual wear and more formal occasions. The black embossed dial, a signature of the Aquanaut line, adds texture and depth, offering a striking contrast with the polished steel case.