The Chinese and Egyptians develop simple sundials; easy to build, so a huge variety evolves all over the world during this time period.
Pocket Watch
1574
The first known pocket watch is created, but the inventor remains unknown. The watch, crafted in bronze, depicts Saint George slaying a dragon on the front and the Crucifixion on the back.
Pendulum Clock
1656
The first pendulum clock is patented by Christian Huygens.
Stopwatch
1812
Nicolas Rieussec files a patent for a "timekeeper or device to measure the distance traveled, called a seconds chronograph". This is the birth of the era of the chronograph, or stopwatch.
Wristwatch
1812
Abraham-Louis Breguet creates a watch to fit on a wrist (the first wristwatch), for Caroline Murat, Queen of Naples.
Casium Atomic Clock
1955
The first Caesium atomic clock, which keeps accurate time to within a few seconds every 100,000 years, is invented by Dr. Essen of the National Physical Laboratory.
Electric Watch
1957
America's Hamilton Watch Company produces the first successful electric watch
Quartz-Crystal Analog Wristwatch
1969
Seiko introduces its first quartz-crystal analog wristwatch.
Digital Watch
1972
Calculator Watch
1975
Computer Watch
1980
Seiko began to develop watches with computing ability.