Watch terminology flashcards
Master movements, brands, and complications you should know cold.
A mechanical movement that winds itself using a weighted rotor that spins as you move your wrist.
Swiss Official Chronometer Testing Institute - certifies watch accuracy to -4/+6 seconds per day.
The length from top lug to bottom lug - most important sizing measurement for proper fit.
Any function beyond displaying hours, minutes, and seconds.
A movement designed and manufactured by the watch brand itself vs. buying from ETA or Sellita.
How long a mechanical watch runs on a full wind, typically 38-80 hours.
A complication with a second hour hand for tracking an additional timezone.
Scratch-resistant watch crystal, rated 9 on Mohs scale - only diamond and sapphire can scratch it.
A stopwatch function operated by pushers that displays elapsed time.
Seiko's hybrid movement combining mechanical mainspring with quartz regulation for ±1 second/day accuracy.