A robust automatic mechanical movement, the Rolex Sea Dweller Deepsea features a black stainless steel case and bezel. This men's wristwatch has a diameter of 44mm, measuring approximately 42mm on the wrist. It is equipped with luminous hands and hour markers for optimal underwater visibility up to impressive depths. The Calibre 31 movement ensures precise timekeeping, while the screw-down monobloc winding/security system offers water resistance suitable for deep-sea diving.