ULTRA-CHRON CLASSIC

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.

CASE

Shape: Round

Material: Stainless steel

Glass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides

Case Back: Screw-down case back

Dimension: Ø 37.00 mm

Lug distance: 19 mm

Thickness: 10.95 mm

Water Resistance: Water-resistant to 5 bar

Weight:  59.0  g

DIAL & HANDS

Dial color: Sunray silver

Hour markers: Applied indexes

Hands: Silvered polished hands

Specificities: Swiss Super-LumiNova®

MOVEMENT & FUNCTIONS

Movement Type: Automatic

Functions: Hours, minutes, seconds and date

Caliber: L836

Movement Description: Self winding mechanical movement beating at 36'000 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 52 hours

STRAP 

Bracelet/Strap: Strap 

Material: Alligator 

Color: Black

Buckle: With buckle

REF: L25374722