The Oris Aquis Date Calibre 400, reference 01 400 7769 4157-07 4 22 74FC, is a 41.5 mm stainless steel diver's watch featuring a green dial and a black rubber strap. It is powered by the in-house Calibre 400 automatic movement, offering a five-day power reserve and enhanced anti-magnetic properties. The watch includes a unidirectional rotating bezel with a ceramic insert, a screw-down crown, and a sapphire crystal with anti-reflective coating. It is water-resistant up to 300 meters and has a transparent case back.