Power reserve is a concept that only applies to watches that use a mechanical movement, and refers to the time that can run until the watch stops after the watch is wound to its maximum capacity.
With the advancement of technology, many models with power reserves of 72 hours or more have been released recently, allowing the watch to run continuously from the time you take it off on Friday evening to the time you put it on on Monday morning.
Luminor GMT 10 Days / ⓒ PANERAI
Additionally, some brands are developing watches that maximize the power reserve and maintain it for a week, up to 10 days. It also displays the remaining amount of winding power through the power reserve indicator.
Sophie
VIVER Content Team