The Longines Elegant Collection model L4.309.4.78.6 features a stainless steel housing and a Grey face. It is powered by a self-winding central seconds movement, identified as caliber L592.2, though production years may utilize L592 or L595; the mechanism is visible via the transparent case back.
Shape
Round
Lug Distance
13.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
25.50 mm
Water Resistance
30.00 m
Dial Color
Grey
Material
Bracelet