Description
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.
Specifications
Case
Shape
Round
Glass
Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides
Case Back
Case back engraved with “Chronometer officially certified” and Ultra-Chron logo
Case Material
Stainless steel
Diameter
37 mm
Lug Width
19 mm
Water Resistance
Up to 5 bar (50 meters)
Thickness
10.95 mm
Dial
Colour
Domed, sunray silver
Hour Markers
12 applied silver-polished indexes
Hands
Rhodium-plated
Date
Trapezoidal date aperture at 3 o’clock
Power Reserve
Up to 52 hours
Movement and Functions
Movement
Self-winding mechanical movement
Caliber
Calibre L836.6
Functions
Hours, minutes, seconds, date
Strap
Material
Alligator leather strap
Colour
Black
Buckle
Steel pin-buckle