Fancy French words and technical jargon, explained.

Like cars and computers, the terminology behind watches is almost as complicated as the mechanics that drive them. Diehard watch nerds throw around familiar terms like “caliber,” “frequency” and “complication” with little regard for an outsider’s knowledge of what they mean in a watch context; they also spout simple jargon that means a lot (“jewels”) and intimidating terms that are actually simple (“Manufacture d’Horologie”). For the timekeeping newbie, a simple glossary will help cut the confusion — consider this your reference point.
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https://www.gearpatrol.com/watches/a233262/glossary-of-watch-terms/