Welcome to Dialed In, Esquire’s column bringing you horological happenings and the most essential news from the watch world. If you know about dive watches, the Longines Legend Diver is an ...

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. 7827 ...

It was the world’s first high-frequency diver watch (edging out the Zenith El Primero), brought back to life by Longines in 2022 and updated for 2025 to feature a carbon fiber case. In the late ...