Original Swiss watches Rolex Datejust II 41mm Steel

The Datejust II 116300 is equipped with a 3136 caliber, with automatic winding. The mechanical calibre is fully designed and manufactured by Rolex, and is a certified Swiss chronometer that has successfully passed the COSC test. The mechanism’s architecture, like all Oyster models, makes it particularly accurate and reliable. The Parachrom blue balance spiral is patented and manufactured by Rolex from an exclusive alloy. It is insensitive to magnetic fields, has greater stability when temperature changes occur, and remains 10 times more accurate than traditional coils in the event of sudden movements.