Definitions for "Power Reserve"
Running time for a watch fully wound up until it stops.
The time a watch will run with a fully-charged power supply. Duration in hours of the residual functioning autonomy of a movement after it has reached the winding peak. The duration value is displayed by either an analog or digital instantaneous indicator. The related mechanism is made up of a series of gears linking the winding barrel and hand.
The amount of energy reserve stored up to keep a watch running until it stops. The remaining power is sometimes indicated by a small gauge on the dial.