Inside the ref. 6062 is the Rolex automatic caliber 655 developed for the model, also called the Super Balance 9.75 (referencing the caliber measuring
link 9 ¾ lignes). The base movement has
link 17 or 18 jewels (17 commonly found in U.S. market examples because of higher taxes), with the additional calendar module. Each movement was chronometer certified, as indicated on the dial at either
link 12 or six o'clock.