A mechanical watch in which an interior system winds it automatically, removing the need for hand winding.
The top part of the watch case, sealing the crystal over the face.
The specific type of watch movement.
A watch complication with a stop-watch function.
Functions in addition to time keeping.
Circular protrusion on the side of a watch for winding it.
Literally what makes a watch tick – the mechanism converting rotating motion to into regulated beats of time.
Greenwich Mean Time, but also used for watches with a second time zone.
Synthetic rubies used to minimise friction in the movement’s rotating gear wheels.
The parts of the case which connect to the strap or bracelet.
A handwound watch.
The engine of the watch – the mechanism driving the motion of the hands and complications.
The duration of the remaining power stored in the clock, indicated by a subdial.
One of the most prestigious complications, mounting the escapement in a cage to counteract gravity.