CALIBRE 3155

Introduction and Launch: The Rolex calibre 3155 is an automatic movement designed and manufactured by Rolex, best known for powering the iconic “President” Day-Date models from 1988 to 2019. Introduced with the Ref. 118000, it replaced the calibre 3055 and featured both day and date complications. While the Day-Date received updates in 2000, the calibre 3155 remained in use until the larger Day-Date II debuted with the calibre 3156. Renowned for its reliability and precision, it played a key role in the legacy of the Day-Date series.

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 3155 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 Elastor Anti-Shock System
Hairspring:
Breguet Hairspring later updated to the Parachom Blue Hairspring
Certification:
Calibre 3155 is certified by the Official Swiss Chronometer Testing Institute (COSC) for precision and accuracy

Design and Features

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

Watches with this Calibre

Rolex Day-Date:
18206 / 18208 / 18238 / 18239 / 18248 / 18249 / 18296 / 18308 / 18338 / 18346 / 18348 / 18349 / 18368 / 18378 / 18388 / 18946 / 18948 /
18956 / 18958 / 118135 / 118138 / 118139 / 118205 / 118206 / 118208 / 118209 / 118235 / 118238 / 118239 / 118296 / 118338 / 118339 / 118346 / 118348 / 118366 / 118388 / 118389 / 118395 / 118398 / 118399
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