Analogue watch is an example of a retronym

Retronym

A retronym is a type of neologism that provides a new name for an object or concept to differentiate the original form or version of it from a more recent form or version. The original name is most often augmented with an adjective to account for later developments of the object or concept itself...

. It was coined to distinguish analogue watches, which had simply been called "watches", from newer digital watches; see watch

Watch

A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in a pocket, with wristwatches being the most common type of watch used today. They evolved in the 17th century from spring powered clocks, which appeared in the 15th century. The first watches were...

 and clock

Clock

A clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece...

.

The name refers to the design of the display, regardless of the timekeeping technology used within the watch.

A digital

Digital

A digital system is a data technology that uses discrete values. By contrast, non-digital systems use a continuous range of values to represent information...

watch is one in which the time is displayed as a series of digits, e.g. "13:37". An analog watch is one in which the display is not digital, but is indicated (typically) by the continuous motion of two or three rotating pointers or hands pointing to numbers arrayed on a circular dial (the hour hand's movement being analogous to the path of the Sun across the sky).