Subdial

subdial
A small dial on the face of the watch used in complications like a chronograph to record elapsed time or the date amongst other features ...

Subdial
The small dials located on the watch face that display chronograph functions of the watch such as the stopwatch, timer, elapsed time measurement, date, day of the week and moon phase.

Subdial: A dial within a the dial of the watch or on the main dial of a watch. See Dial. Table:The largest facet of a gemstone, located on the top of the diamond, through which refracted light escapes as brilliance.

See also: Channel, Bracelet, Copper, Diamond, Settings