Ultra‑chron Carbon Case Size_29 Weight: 77

Weight: 77

By converting both natural and artificial light into energy

the dark blue rubber strap integrates a high-quality steel buckle and an extension link for unparalleled reliability

second timezone

Thickness: 13 mm

Ultra‑chron Carbon Case Size_29 Weight: 77In 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 wristwatch, an observatory chronometer that