CALIBRE 3055

Introduction and Launch: The Rolex calibre 3055 is an automatic movement produced from 1977 to 1988, primarily used in the renowned “President” Day-Date model. As the fifth-generation movement for the Day-Date, it belonged to the Rolex 3000 movement family and was developed alongside the Oysterquartz calibre 5000 series, sharing several components. Notably, the calibre 3055 introduced the "quick-set" date feature, first seen in the Ref. 18026 in the late 1970s. It was phased out in 1988 and succeeded by the upgraded calibre 3155.

Technical Specifications

Jewels:
27 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 3055 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 Anti-Shock System
Hairspring:
Breguet overcoil with a Microstella regulation
Certification:
Calibre 3055 is certified by the Official Swiss Chronometer Testing Institute (COSC) for precision and accuracy

Design and Features

Hands Configuration:
Hours, minutes, seconds, day window at 12 o'clock and date window at 3 o'clock

Watches with this Calibre

Rolex Day-Date:
18018 / 18026 / 18028 / 18029 / 18038 / 18039 / 18046 /18048 / 18049 / 18078 / 18079 / 18108 / 18129 / 18168 / 18138
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