Rolex Caliber 3155
The Rolex Caliber 3155 is a self-winding mechanical movement introduced in 1988 and used extensively in the 36mm Day-Date. It was engineered to deliver outstanding reliability, refined performance, and improved usability through its hallmark feature: the double quickset mechanism. This system allows the wearer to adjust both the day and the date independently—an important convenience upgrade over earlier Day-Date movements. Show more
Operating at 28,800 vibrations per hour (4 Hz), the 3155 maintains a smooth second-hand sweep and consistent accuracy. It is COSC-certified, ensuring performance that meets strict chronometer standards. Rolex designed the movement with a robust free-sprung balance and a Breguet overcoil, supporting long-term stability and resistance to positional variations.
The Caliber 3155 uses Rolex’s bidirectional Perpetual rotor system for efficient automatic winding, helping the watch stay fully powered with ordinary wrist motion. The movement also features a strong balance bridge and shock-resistant components to enhance durability.
Built with serviceability in mind, the 3155 remains one of the most respected Rolex calibers from the late 20th and early 21st centuries. Its dependability, straightforward maintenance, and excellent day-date functionality make it a favorite among collectors and Day-Date enthusiasts.
