Longines Heritage Ultra-Chron Classic 40mm Automatic L2.937.4.72.6 brand_topper-ideal-lab-diamonds One way rotating elapsed timing

One way rotating elapsed timing bezel

Case back: Sapphire

“Elegance

As Seiko celebrates the 100th anniversary of the wordmark "SEIKO" appearing on a watch dial

Longines Heritage Ultra-Chron Classic 40mm Automatic L2.937.4.72.6 brand_topper-ideal-lab-diamonds One way rotating elapsed timingRevisiting a classic, high frequency pioneer In 1968, Longines launched the Ultra Chron Diver, the first dive watch equipped with a high frequency movement. At the time, Longines had already established itself as a pioneer in high frequency technology. As early as 1910, the winged hourglass brand created the first high frequency timekeeping device capable of measuring 1 10th of a second. In 1959, Longines developed the first high beat movement for a