The new Jaeger-LeCoultre Geophysic collection is the horological equivalent of a gateway drug: At first glance, its signature timepiece looks like a classic men’s model with a simple date complication; dig deeper, however, and it becomes a seductive portal into the world of high watchmaking.

Introduced at Watches & Wonders in Hong Kong on September 30, the collection comprises two models—the Geophysic True Second and the Geophysic Universal Time—that take their historic cues from an antimagnetic chronom…