Most people consider the Longines of today to be a shell of its former self. In large part, I agree. While I certainly don't look down on a modern Longines owner, it's hard to argue that the movement technology and design they pioneered in the 19th and early 20th century (can anyone say 13ZN??) truly had a much larger impact to the watch world than today's interestingly designed, but re-cased ebauche movements. One of the last hurrah's for the Longines of old was most certainly the Ultra-Chron movement. Built and sold during a period where a certain new technology looked to supplant the necessity of a finely designed mechanical movement: Quartz. Quartz brought with it a new degree of accuracy and precision. It lacked soul, it lacked passion, but when it came to the core competency of time-telling, it was undoubtedly king. Longines positioned the Ultra-Chron as it's high-beat, super accurate movement. In fact, in advertising from the late 60's/early 70's, they guaranteed the movement to be accurate to within 1 minute a month (about 2 seconds a day). you could even argue that the coil logo used for the Ultra-Chron, that resembles an electrical coil was somewhat of an "Eff you" to the quartz movement.
I am lucky enough to own 3 amazing examples of Ultra-Chrons (Thanks to HudsonTime). Here's one, somewhat fittingly positioned with modern tech. It's an outlier juxtaposed to microchipped electronic devices, but oddly enough, not an outlier at the same time.