A snippet of watch history. The concept of the wristwatch goes back to the production of the very earliest watches in the 16th century. Wristwatches were almost exclusively worn by women, while men used pocket-watches up until the early 20th century. In the end of the 19th Century, military men started to wear wrist-watches while mounted on a horse in the heat of war battle. Pocket-watches were not practical when synchronizing maneuvers during war without potentially revealing the plan to the enemy through signaling. Officers at war started to strap watches to their wrists. Visit Wikepidia.org to learn more.