When Longines revived the Ultra-Chron in 2022, it heralded a new era of high-frequency domination for the Swiss luxury brand. An important step in the St Imier favourite’s quest to ...
The Ultra-Chron story began in 1966 when Longines introduced the world's first mass-produced high-frequency precision watch. This groundbreaking timepiece, known as the Ultra-Chron ref.