lancardo steampunk mechanical pocket watches men black dragon/phoenix hollow retro necklace pocket watch with chain for men t200502, Slivery;golden

operation in a mechanical watchthe watchs gears are turned by a spiral spring called a mainspring. in amanual watchenergy is stored in the mainspring by turning a knob, thecrownon the side of the watch, winding the mainspring. then the energy from the mainspring powers the watch movement until it runs down, requiring the spring to be wound again. a self-winding watch movement has a mechanism which winds the mainspring using the natural motions of the wearers body. [1] the watch contains...