The Rolex Oyster Perpetual 34mm is a wristwatch with a diameter of 34mm. It is powered by the automatic caliber 3130. The 904 stainless steel case is fitted with a domed bezel and a screw-down 'Twinlock' crown.
This model is equipped with calibre 3130, a self-winding mechanical movement entirely developed and manufactured by Rolex. Like all Rolex Perpetual movements, the 3130 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests - though versions without also exist. It is fitted with a Parachrom hairspring, offering greater resistance to shocks and to temperature variations. Its architecture, in common with all Oyster watch movements, makes it singularly reliable.