The Engineering
A mechanical watch runs without batteries, circuits, or electricity. Its power source is a coiled strip of steel called a mainspring. Wind the crown, and you tighten that spring. As it unwinds, it releases energy through a gear train that reaches the balance wheel — a small weighted wheel swinging back and forth roughly 28,800 times an hour, controlled by a hairspring thinner than a human hair.
Between the gear train and balance wheel sits the escapement — a gatekeeper that releases one tooth of the escape wheel per swing, letting the hands advance by a tiny, measured amount. The ticking you hear is the escapement locking and unlocking, hundreds of times a minute.
No software governs this. No chip. No firmware update. It's geometry, spring tension, and friction — calibrated by hand to keep time within a few seconds a day. A standard movement manages this with around 130 components. A complicated one can have over 600.
