Around 80% of the watches we buy are round, leaving square dials and cases to make a statement on the wrist. A portrait of four angles that get it right.

Showcased inside a building by award-winning architect Shigeru Ban, part of Swatch Group's Cité du Temps campus in Biel, the new Omega Museum traces 170 years in the history of a multi-talented brand.

From the advent of the luxury sport watch in the 1970s to the birth of the smartwatch in the new millennium, a number of factors have influenced the trajectory of the sport watch. One of the most significant is the increasingly competitive world of professional sports and the growing numbers of watches worn during play.

"See red", "Feel blue", "Green with envy"... expressions such as these reflect how colour impacts our mood and behaviour. Watch brands also use colour to appeal to our subconscious. Is the owner of that blue chrono buying into their desire for distant horizons? Is the lady with the scarlet automatic a femme fatale? Read on and see what the colour of your watch says about you.

In a year marked by Woodstock, Concorde's first scheduled flight and the moon landing, Swiss watchmakers battled it out to present the first automatic chronograph. It would be Seiko that took the honours with its Calibre 6139, before striking an almost fatal blow with the Astron.