Longines Ultra‑Chron Carbon 43mm anthracite automatic titanium and carbon watch 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 1/10 of a second. In 1959, LONGINES developed the first high-frequency movement for wristwatches, an observatory chronometer that set new records in terms of precision. The new Ultra-Chron draws inspiration from the aesthetic codes and professional diving features of the 1968 model. These certified chronometer watches are powered by an exclusive LONGINES calibre with 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

DIMENSIONS 43 mm

WATER RESISTANCE Water-resistant to 30 bar

CASE BACK Screw-down

CROWN Screw-in 

Dial and hands

DIAL COLOUR Anthracite

HOUR MARKERS Applied indexes

HANDS PVD grey polished hands

CHARACTERISTICS Swiss Super-LumiNova®

Movement and functions

MOVEMENT TYPE Automatic

CALIBER L836

MOVEMENT DESCRIPTION Self-winding 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 

COLOUR Black

BUCKLE Titanium

 

General

ANTI-MAGNETIC Yes

CHRONOMETER OFFICIALLY CERTIFIED Yes