1915

• Gaston Breitling, son of Breitling founder Léon Breitling, developes the first wrist chronograph.
• Patek Philippe produces its first complicated watch, a ladies 5-minute repeater in platinum.
• Tissot starts the production of wristwatches.
• After England has fixed high import duties on watches, Rolex relocates its headquarters from London to Biel/Bienne (Switzerland) and 1920 to Geneva.

← 1914 | 1916 →