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 pocketwatch is designed for a person to carry in a pocket, often attached to a chain.Most electronic quartz watches, on the other hand, include time-related features such as timers, chronographs and alarm functions.