Chronoswiss Grand Lunar Chronograph Lunar Chronograph BrandChronoswiss CollectionLunar Chronograph ModelGrand Lunar Chronograph ReferenceÑÍ 7541 L R Country of originSwitzerland Type of watchMen's Case materialRose gold Case diameter41 mm Case thickness15 mm AutomaticChronographHoursMinutesSecondsDateMoon phaseTransparent casebackWristwatch