CALIBRE 645

Introduction and Launch: The Rolex calibre 645, introduced in 1950, was a pivotal advancement in their automatic movement technology. This marked a significant milestone as Rolex led the charge in post-war horological innovation. The calibre 645, powering iconic models like the Oyster Perpetual, showcased Rolex's commitment to pioneering self-winding mechanisms, sweep-seconds functionality, and durable shock protection, setting new standards for watchmaking excellence.

Technical Specifications

Jewels:
17 Jewels
Power Reserve:
Power reserve of approx 41 hours
Beat Rate:
Operating at 18,000 vibrations per hour (2.5Hz)
Movement:
Self-Winding mechanical movement
Escapement:
Calibre 645 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:
Viberax Anti-Shock
Hairspring:
Breguet
Certification:
NA

Design and Features

Hands Configuration:
Hours, minutes and central seconds

Watches with this Calibre

Rolex Oyster Perpetual:
6085
Back to List