Longines Ultra-Chron Carbon 43mm Anthracite Automatic Titanium and Carbon L2.839.4.52.2

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 1914, the winged hourglass brand created the first high-frequency timing device capable of measuring 1/10th of a second. In 1959, LONGINES developed the first high-frequency movement for wristwatches, an observatory chronometer that set new records for precision. The new Ultra-Chron draws inspiration from the aesthetic codes and professional diving features of the 1968 model. These chronometer-certified watches are powered by an exclusive LONGINES caliber featuring a silicon balance spring and resistance to magnetic fields.

 

Case

MATERIAL Titanium and carbon 

GLASS Scratch-resistant sapphire crystal with multi-layered anti-reflective coating on both sides

SIZE 43 mm

WATER RESISTANCE Water-resistant to 30 bar

CASE BACK Screwed

CROWN Screwed 

Dial and hands

DIAL COLOR Anthracite

HOUR CIRCLE Applied indices

HANDS Polished gray PVD hands

FEATURES Swiss Super-LumiNova®

Movement and functions

MOVEMENT TYPE Automatic

CALIBER L836

MOVEMENT DESCRIPTION Automatic mechanical movement with a frequency of 36,000 vibrations per hour and a power reserve of approximately 52 hours, monocrystalline silicon balance spring

FUNCTION Hours, minutes, and seconds

Strap

MATERIAL Synthetic strap 

COLOR Black

BUCKLE Titanium

 

General

ANTIMAGNETIC Yes

CHRONOMETER OFFICIALLY CERTIFIED Yes