Founded in 1833 when Antoine LeCoultre opened up a watch factory in Switzerland and began his career as a watchmaker. Antoine LeCoultre developed numerous new methods and manufacturing tools. The movements and watches that LeCoultre created are still depended on today by various other watch companies. When the company was in the hands of his grandson, David LeCoultre, the brand was merged with Edmond Jaegers company and thats how Jaeger LeCoultre was established. Antoine created a button that could be push down to switch functions instead of utilizing keys to rewind and set the watch. After a watch was manufactured it had to be put through a 1000 hour test before it can be given to the consumer. Utilizing this method made room for no mistakes for such a high-end watch company, such as Jaeger LeCoultre.