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CALIBRE 1055
Introduction and Launch: The Rolex calibre 1055, introduced in 1954, is an automatic chronometer movement best known for powering the Rolex Day-Date.
Technical Specifications
Jewels:
25 Jewels
Power Reserve:
Power reserve of approx 48 hours
Beat Rate:
Operating at 18,000 vibrations per hour (2.5Hz)
Movement:
Self-Winding mechanical Chronometer movement
Escapement:
Calibre 1055 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:
Kif A Anti-Shock System
Hairspring:
Breguet Hairspring
Certification:
Calibre 1055 is certified by the Official Swiss Chronometer Testing Institute (COSC) for precision and accuracy
Design and Features
Hands Configuration:
Hours, minutes, central seconds, day window at 12 o'clock and date window at 3 o'clock
