Horology glossaryDefined term / pusher
Pusher
The button on a chronograph case, separate from the crown, used to start, stop, and reset the stopwatch function.
Authentication note
Why this detail matters.
Pusher shape, action, and placement are reference-specific, and a chronograph's pushers should operate smoothly with a feel consistent with the caliber inside. Pushers that feel loose, misaligned, or mismatched to the case can indicate case parts from different watches, or an aftermarket replacement.