This Rolex Sky-Dweller utilizes a complex calibre 9001 perpetual movement and a ring command bezel system, allowing you to read home and local time, the date, and the month. Depending on the position of the ring command bezel, the wearer can use it to adjust either the central hands, the 24-hour center ring, the date aperture, or the day of the month – which is cleverly set above each coordinating hour marker. The movement also utilizes a Paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers for a highly accurate reading. A 72-hour power reserve means that you can set your watch down on Friday evening and it will still read true when you walk into work on Monday morning. This pre-owned Rolex is a White Rolesor variation that blends 904L stainless steel and 18-karat white gold for a durable yet luxurious finish. A 42mm Oyster case and matching Oyster bracelet offer a comfortable fit and are secured with a folding Oysterclasp with a 5mm Easylink extension system.