====== Pusher ======
{{wst>image_cr|Omega|De Ville Co−axial Rattrapante|This De Ville Co−axial Rattrapante has three pushers in addition to the crown}}

A **pusher** (also called a **push piece** or **button**) is used to activate an internal function in a watch, typically a [[chronograph]].

Most watches use a [[crown]] to control timekeeping functions, but many other [[complication]]s are activated by other means. In [[chronograph]] watches, a "pusher" is the most common control mechanism. Typically extending out of the case at 2 00 and 4 00, the pushers start, stop, and reset the chronograph timing function. Some chronographs include another pusher to control a [[rattrapante]] hand, while other "[[monopusher]]" models use a single pusher co-axial with the crown. [[Bullhead]] models feature pushers at 11 00 and 1 00.

There are different styles of pushers Some extend far out from the case ("pump pushers"), while others sit nearly flush or are shaped to integrate with the [[case]] or [[crown guard]]s. Some watches are known for unusual pushers, including the 1980s Seiko Giugiaro chronographs which had cam-activated pushers extending far outside the case.

Note that flush or inset buttons are usually called [[corrector]]s, since they are typically used to correct the functions of a complication such as a [[perpetual calendar]].

===== See Also =====
  * [[Corrector]]
  * [[Crown pusher]]
  * [[Bullhead]]


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