The specific model or design of a watch movement.
Extended Explanation:
“Calibre” refers to the movement that powers a watch—its engine. Each calibre has unique specifications such as power reserve, frequency, and complication layout. Watchmakers often develop in-house calibres, showcasing their technical expertise and innovation. For example, Rolex’s Calibre 3235 and Omega’s Calibre 8900 are renowned for precision and reliability. The term can also denote the movement’s architecture, size, or generation.
