In order for watches to exist, clocks first had to be invented. Although sundials and other methods of telling time have been around for centuries, the first mechanical clock was invented in the 13th century and the mainspring for the clock was invented in 1485 by Leonardo da Vinci.
With the invention of the mainspring, watchmakers were able to create smaller, more practical wrist watches in 1517, thus creating the first modern-day wrist watch. Since that time, many changes and improvements have been made to the watch, helping it to become one of the most popular and useful accessories of our time.
Thirty-nine years after the mainspring was invented, German locksmith Peter Henlein designed the first pocket watch in 1524. Many different people began to use pocket watches, but wristwatches became more popular to wear.