CALIBRE 2231

Introduction and Launch: The Rolex calibre 2231, an automatic movement found in Rolex OP 26 and 31 models, continues Rolex's legacy from 1931 when they introduced their first automatic movement in the Oyster Perpetual. This self-winding mechanism operates through a mainspring kept under constant tension by the wearer's arm movements. Originally introduced in 2014, the Rolex calibre 2231 is a compact automatic movement that remains in use today, powering the iconic Oyster Perpetual line with reliable precision.

Technical Specifications

Jewels:
31 Jewels
Power Reserve:
Power reserve of approx 48 hours
Beat Rate:
Operating at 28,800 vibrations per hour (4Hz)
Movement:
Self-Winding mechanical movement
Escapement:
Calibre 2231 features a traditional Swiss lever escapement. It consists of a balance wheel, hairspring, pallet fork, and escape wheel. This mechanism not only regulates the energy release from the mainspring but also maintains the balance assembly at a consistent and precise rate
Anti-Shock:
Paraflex Anti-Shock System
Hairspring:
Parachrom Blue Hairspring
Certification:
Calibre 2231 is certified by the Official Swiss Chronometer Testing Institute (COSC) for precision and accuracy

Design and Features

Hands Configuration:
Hours, minutes and seconds

Watches with this Calibre

Rolex Oyster Perpetual:
177200 / 176200
Back to List