Longines Spirit Chronograph

Case
Shape: Round
Material: Stainless steel
Glass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides
Dimension: Ø 42.00 mm
Lug distance: 22 mm
Lug-to-lug: 51.40 mm
Thickness: 16.50 mm
Water Resistance: Water-resistant to 10 bar
Case Specificities: Screw-in crown
Weight: 187.9 g

Dial & Hands
Dial color: Silver
Hour markers: Applied Arabic numerals
Hands: Black hands
Specificities: Swiss Super-LumiNova®

Movement & Functions
Movement Type: Automatic
Functions: Hours, minutes, small seconds at 9 o'clock and date
Caliber: L688.4
Movement Description: Self-winding mechanical movement beating at 28'800 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 66 hours
Chronograph: Column Wheel Chronograph
Chronograph Functions: Chronograph mechanism: central 60 seconds hand, 30 minutes counter at 3 o'clock and 12 hours counter at 6 o'clock

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

General
Chronometer Officially Certified: Yes

Reference
L3.820.4.73.6