Omega Constellation Chronometer St 168 017 SpThe Constellation is an exclusive line of Omega watches with a dressy design and a high precision movement. Today, the collection is designed more like a dress watch. It is a classic vintage Omega watch, along with the Seamaster, and is particularly famous for its case shape, known as the C line case. It was the case design that helped extend the reputation of watch designer Gerald Genta, who designed Audemars Piguets Royal Oak and Patek Philippes