A pocket watch is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.
Savonette with cathedral hands and luminescent dial made by Thos. Russell & Son (probably in the 1920s)
A golden pocket watch with hunter-case and watch chain
Pocketwatches evolved from clock-watches, supposedly called Nuremberg eggs, worn on chains around the neck. Example by Peter Henlein, 1510, Germanisches Nationalmuseum Nuremberg.
A French pocketwatch from the 1920s
A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps, or any other kind of bracelet. A pocket watch is designed for a person to carry in a pocket, often attached to a chain.
A modern wristwatch featuring solar charging and Bluetooth capabilities
A 1983 Casio watch with touchscreen
A pomander watch from 1530, which once belonged to Philip Melanchthon and is now in the Walters Art Museum, Baltimore
A watch drawn in Acta Eruditorum, 1737