Rolex Calibre 3135

The Rolex Caliber 3135 is one of the most important and widely praised automatic movements ever created by the brand. Introduced in 1988 and used for more than three decades, it became the foundation for many of Rolex’s most iconic watches, including the Submariner Date, the Datejust 36, the Sea-Dweller 16600, and various Yacht-Master models. Its long production run, reliability, and exceptional accuracy earned it a reputation as a true workhorse movement. Show more

Technically, the 3135 is a self-winding mechanical movement with a 48-hour power reserve and a 28,800 vph (4 Hz) beat rate, delivering smooth second-hand motion and stable timekeeping. It includes a COSC chronometer certification, ensuring strict accuracy standards. One of the most significant upgrades in its lifetime was the addition of Rolex’s blue Parachrom hairspring, which offers outstanding resistance to magnetism, shocks, and temperature variations while improving long-term stability. The movement features a full balance bridge and a free-sprung balance with Microstella regulation, enhancing durability and precision. Its bidirectional Perpetual rotor improves winding efficiency, allowing the watch to stay fully powered through normal wrist movement. Another hallmark of the 3135 is its instantaneous date change mechanism, a fast and reliable complication found across all models powered by this caliber.