This is a black dial Longines Spirit Automatic Stainless Steel Watch, model L3.811.4.53.6. 

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: 12.20 mm
Water-resistant to 10 bar
Case Specificities: Screw-in crown
Weight: 153.6 g

Dial color: Black matt
Hour markers: Applied Arabic numerals
Hands: Silvered sandblasted hands
Specificities: Swiss Super-LumiNova®

Movement Type: Automatic
Functions: Hours, minutes, seconds and date
Caliber: L888.4
Movement Description: Self-winding mechanical movement beating at 25'200 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 72 hours