Watch Glossary

Chronograph optimized for maritime use with specific timing functions for nautical operations.

French term for dead beat or jumping seconds hand mechanism with stepped advancement.

Time measured by the Earth's rotation relative to stars rather than the sun.

Advanced accelerometer differentiating REM, light, and deep sleep phases

Chiming mechanism that strikes the hours and sometimes quarters automatically at set times.

Chronograph with two independent hands allowing measurement of two simultaneous time intervals.

Watch dial depicting the night sky map with stars and constellations for a specific latitude.

Biometric algorithm analyzing heart rate variability to assess psychological tension

Complication using hammers and gongs to audibly announce time or trigger alarms at predetermined intervals.

Smaller dials within the main dial displaying specific functions like chronograph elapsed time or subdued seconds.

Complication displaying the times of sunrise and sunset for the wearer's location or selected city.

Mechanical display showing the times of sunrise and sunset for a specific geographic location.

Complication displaying precise times of solar rise and set for specific geographic location.