Q

Quartz Crystal - the tiny piece of quartz that serves as an oscillator in a quartz watch.

Quartz watch - powered by a battery.  Analogue or digital display. The timing base oscillates at 32,768 times per second which makes them very accurate.

Quarter Repeater - strikes the hour and quarter hour. (see Repeater)

e.g.     Hour =                  Ding
          Quarter Hour =     Ding Dong

                    Ding Ding Ding - Ding Dong
                    indicates that the time is 3:15                

Quick-Set - (Quick-Date) mechanism to set the date directly to avoid having to turn the hands over 24 hours.