complication
n.— «Yes, knobs. Otherwise known as complications, they control everything from a stopwatch accurate to a zillionth of a second, to displaying the phases of the moon, your altitude, and the efficacy of your golf swing. It is these complications, in addition to the expert labor and precious metals and gems used in the making of high-end watches, that add so much to the price.» —“Wristwatches for the Rich” by Nick Passmore BusinessWeek Nov. 26, 2007. (source: Double-Tongued Dictionary)