Tri-Compax 881101/03

Steel Tri-CompaxTri-CompaxUniversal Genève’s model name for a watch combining chronograph, calendar and moon-phase functions. The three refers to these complications, rather than the number of dial registers. It is not a generic name for every chronograph with three subdials. execution with a blue sunburst dial, contrasting light registers, calendar and moon-phase displayMoon-phase displayAn astronomical indication showing the Moon’s changing appearance through its cycle, averaging about 29.5 days. Display accuracy and the interval between corrections depend on the mechanism; a maker’s specification for one calibre should not be applied to every moon-phase watch..