[OMEGA Watches] Water ghosts in Longines Waterproof up to 300 meters Surface diameter 41mm Automatic mechanical watch ETAw200 movement The watch uses a fine steel case Black dial inlaid with Arabic numerals and time scales SuperLumiNova luminous There is a date at three o'clock Wear resistant sapphire crystal glass mirror The watch strap is made of steel chain Use a double-fold safety buckle with a diving extension device simple and stylish business casual