Authentic Longines Master Collection stainless steel men's watch with moon phase complication and black dial. Features a fixed bezel, deployment clasp with push button, scratch-resistant sapphire crystal, automatic movement, date function at 6 o'clock via calendar, moonphase sub-dial indicating the chronograph display duration for up to 64 hours (approx 2.5 days). Power reserve indicator present. Water resistant to 30 meters (approximately 100 feet).