Complication (horology)
（重定向自Complicated watch）
![Watch Greubel Forsey Invention Piece 1](/Images/godic/202501/05/Greubel_Forsey_Invention_Piece_15818.jpg")
![Gallet MultiChron Navigator (1943) with 3 complications: 45-minute recording chronograph, crown-controlled synchronizable second hand, and direction-finding 24-hour hand](/Images/godic/202501/05/Gallet_navigator_chronograph5818.jpg")
In Horology, the study of clocks and watches, a complication refers to any feature in a timepiece beyond the simple display of hours and minutes. A timepiece indicating only hours and minutes is otherwise known as a simple movement. Common complications in commercial watches are day/date displays, alarms, chronographs, and automatic winding mechanisms.