Watch Glossary
Definitions for the terms used across lug2lug spec pages — movement calibers, case materials, complications, and the rest of the working vocabulary of a mechanical (or quartz) watch.
Case
- Lug-to-LugLug-to-lug is the distance between the tips of a watch's top and bottom lugs. It determines how the watch sits on a given wrist size.
- Water ResistanceWater resistance is the watch's tested resistance to water ingress, rated in meters or ATM. The rating describes static pressure, not real-world dive depth.
Complication
Crystal
Dial
General
Movement
- Automatic MovementAn automatic movement is a mechanical watch movement that winds itself from the wearer's wrist motion via an internal rotor.
- ETA 2824-2The ETA 2824-2 is a Swiss automatic movement — the dominant mid-tier workhorse caliber used by hundreds of brands.
- Quartz MovementA quartz movement uses an electronically-pulsed quartz crystal to keep time. It's powered by a battery and is far more accurate than mechanical watches.
- Seiko NH35The Seiko NH35 is a Japanese automatic movement — the standard caliber in budget-friendly microbrand watches and Seiko's own 5 Sports line.
- Sellita SW200-1The Sellita SW200-1 is a Swiss automatic movement designed as a drop-in replacement for the ETA 2824-2. It powers most independent Swiss brands.