Longines

Saint-Imier, Switzerland. Founded 1832. Swatch Group.

Saint-Imier manufacture founded in 1832, known for the Spirit, HydroConquest, Master and Legend Diver lines.

"L3.809.4.93.9": L + family (3 digits), case material, dial, strap; some end in a letter ("L4.512.4.11.B").