Introduction and Launch: The Rolex calibre 775, introduced in the 1950s, powers both the Rolex Pre-Explorer and Explorer models. This vintage automatic movement boasts a
bi-directional winding rotor, a sweep seconds hand, a date function, operates at 18,000 beats per hour, incorporates 17 jewels for reduced friction, includes shock protection, and supports both manual and automatic winding. It stands as a testament to durability and reliability in watch design.