LONGINES ULTRA‑CHRON 43MM

ULTRA‑CHRON

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 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 and sapphire
• Glass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides
• Case Back: Screw-down case back
• Dimension: 43.00 mm
• Lug distance: 22 mm
• Lug-to-lug: 49.00 mm
• Thickness: 13.90 mm
• Water Resistance: Water-resistant to 30 bar
• Case Specificities: Screw-in crown, Unidirectional rotating bezel
• Weight: 172.1 g

DIAL AND HANDS

• Dial color: Black
• Hour markers: Applied indexes
• Hands: Silvered polished hands
• Specificities: Swiss Super-LumiNova®

MOVEMENT AND FUNCTIONS

• Movement Type: Automatic
• Functions: Hours minutes, seconds
• 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

• Material: Stainless steel
• Buckle: With triple safety folding clasp and push-piece opening mechanism

GENERAL 

• Magnetic resistant: Yes
• Chronometer Officially Certified: Yes