The Longines HydroConquest is a 39 mm automatic diver-style watch that pairs a green lacquered dial with robust 30 bar (300 m) water resistance, designed for everyday wear and diving use. Key attributes: Green | Verde laccato lucido | Stainless steel | Water resistant to 30 bar (300 m) | Automatic movement | Luminescent hands and indexes (Swiss Super-LumiNova) | Unidirectional rotating bezel | Screw-in crown and screw-down case back | Stainless steel bracelet | Green lacquered dial | Polished stainless steel case | Ceramic bezel insert | Dimensions & fit: Case diameter: 39.00 mm | Composition & care: Stainless steel | Ceramic | Swiss Super-LumiNova | Wipe with a soft cloth; avoid strong chemicals and extreme temperatures; have serviced periodically by an authorized service center.