Patek Philippe Aquanaut Ref. 5167A 40.8mm Black Tropical Strap Black Embossed Dial Stainless Steel Bezel

Upon its debut in 1997, the Aquanaut caused quite a sensation with its youthful, modern and unexpected design. Its rounded octagonal case was inspired by the Nautilus, and it featured a “tropical” strap made from an advanced composite material that was highly resistant to wear, salt water, and UV radiation.