1. Movement. The engine of the watch.
2. Crown. The mechanism that allows for the winding of the movement and adjustment of functions like date and time. To enhance water resistance, crowns can screw into the case to form a seal against moisture or water.
3. Pusher. Case attachment that controls functions, such as the chronograph or date adjustment.
4. Lugs. Case attachment that allows for a strap or bracelet to be attached to the watch case.
5. Rotor. Oscillating weight that winds an automatic watch when worn.
6. Strap. Commonly a leather or rubber attachment that secures a watch to the wrist. Metal attachments, generally made from stainless steel or gold, are referred to as bracelets.
7. Subdial. A small dial set within the main dial, which is used to display an additional complication such as chronograph readout, seconds, or date.
8. Exhibition Caseback. Fitted with a mineral or sapphire crystal to show movement fnishing.
9. Hour Mark. Hour indicator applied or painted on the dial.
10. Case. Holds the movement and protects it from the elements. It can be made from diferent metals and comes in diferent shapes.