The vintage Constellation was Omega's top of the range waterproof chronometer, and it remains one of the most sought after and collectible of all vintage watches. It is a high end model, produced to compete with other prestige watches made by its main competitors. 

A chronometer, as opposed to a chronograph (a stop watch), is a timepiece that has passed a series of stringent tests carried out by the world’s major observatories to demonstrate very accurate time keeping (hence the emblem on the rear cover).

Condition: Watch works and it was recently serviced, polished and cleaned. It has some minor wear, as it is vintage, but is in excellent condition. Watch has a leather band.