Ultra-Chron Classic

Automatic watch | 37.00 mm | Stainless steel | L2.537.4.72.6

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 wristwatch, an observatory chronometer that set new records in terms of accuracy. The new Ultra-Chron is inspired by the aesthetic codes and professional diving features of the 1968 model. These chronometer-certified watches are powered by an exclusive Longines calibre equipped with a silicon balance-spring and resistant to magnetic fields.

Movement: Automatic Calibre L836.6, chronometer certified, high-beat (36,000 vph), 52-hour power reserve, silicon balance spring, magnetic resistant
Functions: Hours, minutes, seconds, date
Case: 37 mm round stainless steel, 10.95 mm thick
Crystal: Sapphire with multi-layer anti-reflective coating on both sides
Dial: Sunray silver with applied indexes
Hands: Silvered polished
Water Resistance: 5 bar / 50 m
Bracelet: Stainless steel with double security folding clasp and micro-adjustment
Weight: 122 g