: The "engine" of the watch. Common types include Quartz (battery-powered, high accuracy) and Mechanical (hand-wound or automatic).
If you are writing about a watch and need technical terms, these are the standard parts: Watch 6237987711613930039
: Any feature beyond basic timekeeping, such as a chronograph (stopwatch) , date window, or moon phase . Dial (Face) : The surface that displays the time . : The "engine" of the watch